1 | <?php |
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2 | /** |
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3 | * This file is part of the Divergence package. |
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4 | * |
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5 | * (c) Henry Paradiz <[email protected]> |
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6 | * |
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7 | * For the full copyright and license information, please view the LICENSE |
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8 | * file that was distributed with this source code. |
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9 | */ |
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10 | |||
11 | namespace Divergence\IO\Database; |
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12 | |||
13 | use Exception; |
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14 | use PDO as PDO; |
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15 | use Divergence\App as App; |
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16 | |||
17 | /** |
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18 | * MySQL. |
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19 | * |
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20 | * @package Divergence |
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21 | * @author Henry Paradiz <[email protected]> |
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22 | * |
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23 | */ |
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24 | class MySQL |
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25 | { |
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26 | /** |
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27 | * Timezones in TZ format |
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28 | * |
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29 | * @var string $Timezone |
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30 | */ |
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31 | public static $TimeZone; |
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32 | |||
33 | /** |
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34 | * Character encoding to use |
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35 | * |
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36 | * @var string $encoding |
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37 | */ |
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38 | public static $encoding = 'UTF-8'; |
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39 | |||
40 | /** |
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41 | * Character set to use |
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42 | * |
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43 | * @var string $charset |
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44 | */ |
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45 | public static $charset = 'utf8'; |
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46 | |||
47 | /** |
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48 | * Default config label to use in production |
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49 | * |
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50 | * @var string $defaultProductionLabel |
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51 | */ |
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52 | public static $defaultProductionLabel = 'mysql'; |
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53 | |||
54 | /** |
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55 | * Default config label to use in development |
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56 | * |
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57 | * @var string $defaultDevLabel |
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58 | */ |
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59 | public static $defaultDevLabel = 'dev-mysql'; |
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60 | |||
61 | /** |
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62 | * Current connection label |
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63 | * |
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64 | * @var string|null $currentConnection |
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65 | */ |
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66 | public static $currentConnection = null; |
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67 | |||
68 | /** |
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69 | * Internal reference list of connections |
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70 | * |
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71 | * @var array $Connections |
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72 | */ |
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73 | protected static $Connections = []; |
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74 | |||
75 | /** |
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76 | * In-memory record cache |
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77 | * |
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78 | * @var array $_record_cache |
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79 | */ |
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80 | protected static $_record_cache = []; |
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81 | |||
82 | /** |
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83 | * An internal reference to the last PDO statement returned from a query. |
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84 | * |
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85 | * @var \PDOStatement|false|null $LastStatement |
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86 | */ |
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87 | protected static $LastStatement; |
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88 | |||
89 | /** |
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90 | * In-memory cache of the data in the global database config |
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91 | * |
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92 | * @var array $Config |
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93 | */ |
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94 | protected static $Config; |
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95 | |||
96 | |||
97 | /** |
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98 | * Sets the connection that should be returned by getConnection when $label is null |
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99 | * |
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100 | * @param string $label |
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101 | * @return void |
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102 | */ |
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103 | 1 | public static function setConnection(string $label=null) |
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104 | { |
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105 | 1 | if ($label === null && static::$currentConnection === null) { |
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106 | static::$currentConnection = static::getDefaultLabel(); |
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107 | return; |
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108 | } |
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109 | |||
110 | 1 | $config = static::config(); |
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111 | 1 | if (isset($config[$label])) { |
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112 | 1 | static::$currentConnection = $label; |
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113 | } else { |
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114 | throw new Exception('The provided label does not exist in the config.'); |
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115 | } |
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116 | } |
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117 | |||
118 | /** |
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119 | * Attempts to make, store, and return a PDO connection. |
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120 | * - By default will use the label provided by static::getDefaultLabel() |
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121 | * - The label corresponds to a config in /config/db.php |
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122 | * - Also sets timezone on the connection based on static::$Timezone |
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123 | * - Sets static::$Connections[$label] with the connection after connecting. |
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124 | * - If static::$Connections[$label] already exists it will return that. |
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125 | * |
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126 | * @param string|null $label A specific connection. |
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127 | * @return PDO A PDO connection |
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128 | * |
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129 | * @throws Exception |
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130 | * |
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131 | * @uses static::$Connections |
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132 | * @uses static::getDefaultLabel() |
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133 | * @uses static::$Timezone |
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134 | * @uses PDO |
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135 | */ |
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136 | 130 | public static function getConnection($label=null) |
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137 | { |
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138 | 130 | if ($label === null) { |
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139 | 130 | if (static::$currentConnection === null) { |
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140 | static::setConnection(); |
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141 | } |
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142 | 130 | $label = static::$currentConnection; |
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143 | } |
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144 | |||
145 | 130 | if (!isset(static::$Connections[$label])) { |
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146 | 1 | static::config(); |
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147 | |||
148 | 1 | $config = array_merge([ |
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149 | 1 | 'host' => 'localhost', |
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150 | 1 | 'port' => 3306, |
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151 | 1 | ], static::$Config[$label]); |
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152 | |||
153 | 1 | if (isset($config['socket'])) { |
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154 | // socket connection |
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155 | 1 | $DSN = 'mysql:unix_socket=' . $config['socket'] . ';dbname=' . $config['database']; |
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156 | } else { |
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157 | // tcp connection |
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158 | 1 | $DSN = 'mysql:host=' . $config['host'] . ';port=' . $config['port'] .';dbname=' . $config['database']; |
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159 | } |
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160 | |||
161 | try { |
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162 | // try to initiate connection |
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163 | 1 | static::$Connections[$label] = new PDO($DSN, $config['username'], $config['password']); |
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164 | 1 | } catch (\PDOException $e) { |
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165 | 1 | throw $e; |
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166 | //throw new Exception('PDO failed to connect on config "'.$label.'" '.$DSN); |
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167 | } |
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168 | |||
169 | // set timezone |
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170 | if (!empty(static::$TimeZone)) { |
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171 | $q = static::$Connections[$label]->prepare('SET time_zone=?'); |
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172 | $q->execute([static::$TimeZone]); |
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173 | } |
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174 | } |
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175 | |||
176 | 130 | return static::$Connections[$label]; |
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177 | } |
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178 | |||
179 | /** |
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180 | * Recursive escape for strings or arrays of strings. |
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181 | * |
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182 | * @param mixed $data If string will do a simple escape. If array will iterate over array members recursively and escape any found strings. |
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183 | * @return mixed Same as $data input but with all found strings escaped in place. |
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184 | */ |
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185 | 87 | public static function escape($data) |
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186 | { |
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187 | 87 | if (is_string($data)) { |
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188 | 69 | $data = static::getConnection()->quote($data); |
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189 | 69 | $data = substr($data, 1, strlen($data)-2); |
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190 | 69 | return $data; |
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191 | 56 | } elseif (is_array($data)) { |
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192 | 1 | foreach ($data as $key=>$string) { |
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193 | 1 | if (is_string($string)) { |
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194 | 1 | $data[$key] = static::escape($string); |
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195 | } |
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196 | } |
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197 | 1 | return $data; |
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198 | } |
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199 | 56 | return $data; |
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200 | } |
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201 | |||
202 | /** |
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203 | * Returns affected rows from the last query. |
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204 | * |
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205 | * @return int Affected row count. |
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206 | */ |
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207 | 9 | public static function affectedRows() |
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208 | { |
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209 | 9 | return static::$LastStatement->rowCount(); |
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210 | } |
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211 | |||
212 | /** |
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213 | * Runs SELECT FOUND_ROWS() and returns the result. |
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214 | * @see https://dev.mysql.com/doc/refman/8.0/en/information-functions.html#function_found-rows |
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215 | * |
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216 | * @return string|int|false An integer as a string. |
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217 | */ |
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218 | 10 | public static function foundRows() |
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219 | { |
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220 | 10 | return static::oneValue('SELECT FOUND_ROWS()'); |
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221 | } |
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222 | |||
223 | /** |
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224 | * Returns the insert id from the last insert. |
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225 | * @see http://php.net/manual/en/pdo.lastinsertid.php |
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226 | * @return string An integer as a string usually. |
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227 | */ |
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228 | 14 | public static function insertID() |
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229 | { |
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230 | 14 | return static::getConnection()->lastInsertId(); |
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231 | } |
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232 | |||
233 | /** |
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234 | * Formats a query with vsprintf if you pass an array and sprintf if you pass a string. |
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235 | * |
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236 | * This is a public pass through for the private method preprocessQuery. |
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237 | * |
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238 | * @param string $query A database query. |
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239 | * @param array|string $parameters Parameter(s) for vsprintf (array) or sprintf (string) |
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240 | * @return string A formatted query. |
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241 | * |
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242 | * @uses static::preprocessQuery |
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243 | */ |
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244 | 1 | public static function prepareQuery($query, $parameters = []) |
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245 | { |
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246 | 1 | return static::preprocessQuery($query, $parameters); |
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247 | } |
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248 | |||
249 | /** |
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250 | * Run a query that returns no data (like update or insert) |
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251 | * |
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252 | * This method will still set static::$LastStatement |
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253 | * |
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254 | * @param string $query A MySQL query |
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255 | * @param array|string $parameters Optional parameters for vsprintf (array) or sprintf (string) to use for formatting the query. |
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256 | * @param callable $errorHandler A callback that will run in the event of an error instead of static::handleError |
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257 | * @return void |
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258 | */ |
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259 | 27 | public static function nonQuery($query, $parameters = [], $errorHandler = null) |
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260 | { |
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261 | 27 | $query = static::preprocessQuery($query, $parameters); |
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262 | |||
263 | // start query log |
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264 | 27 | $queryLog = static::startQueryLog($query); |
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265 | |||
266 | // execute query |
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267 | try { |
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268 | 27 | static::$LastStatement = static::getConnection()->query($query); |
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269 | 6 | } catch (\Exception $e) { |
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270 | 6 | $ErrorInfo = $e->errorInfo; |
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271 | 6 | if ($ErrorInfo[0] != '00000') { |
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272 | 6 | static::handleException($e, $query, $queryLog, $errorHandler); |
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273 | } |
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274 | } |
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275 | |||
276 | // finish query log |
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277 | 25 | static::finishQueryLog($queryLog); |
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278 | } |
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279 | |||
280 | /** |
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281 | * Run a query and returns a PDO statement |
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282 | * |
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283 | * @param string $query A MySQL query |
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284 | * @param array|string $parameters Optional parameters for vsprintf (array) or sprintf (string) to use for formatting the query. |
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285 | * @param callable $errorHandler A callback that will run in the event of an error instead of static::handleError |
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286 | * @throws Exception |
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287 | * @return \PDOStatement |
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288 | */ |
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289 | 111 | public static function query($query, $parameters = [], $errorHandler = null) |
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290 | { |
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291 | 111 | $query = static::preprocessQuery($query, $parameters); |
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292 | |||
293 | // start query log |
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294 | 111 | $queryLog = static::startQueryLog($query); |
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295 | |||
296 | // execute query |
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297 | try { |
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298 | 111 | static::$LastStatement = $Statement = static::getConnection()->query($query); |
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299 | // finish query log |
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300 | 103 | static::finishQueryLog($queryLog); |
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301 | |||
302 | 103 | return $Statement; |
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303 | 9 | } catch (\Exception $e) { |
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304 | 9 | $ErrorInfo = $e->errorInfo; |
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305 | 9 | if ($ErrorInfo[0] != '00000') { |
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306 | // handledException should return a PDOStatement from a successful query so let's pass this up |
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307 | 9 | $handledException = static::handleException($e, $query, $queryLog, $errorHandler); |
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308 | 2 | if (is_a($handledException, \PDOStatement::class)) { |
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309 | 1 | static::$LastStatement = $handledException; |
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310 | // start query log |
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311 | 1 | static::startQueryLog($query); |
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312 | |||
313 | 1 | return $handledException; |
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314 | } else { |
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315 | 1 | throw $e; |
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316 | } |
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317 | } |
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318 | } |
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319 | } |
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320 | |||
321 | /* |
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322 | * Uses $tableKey instead of primaryKey (usually ID) as the PHP array index |
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323 | * Only do this with unique indexed fields. This is a helper method for that exact situation. |
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324 | */ |
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325 | /** |
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326 | * Runs a query and returns all results as an associative array with $tableKey as the index instead of auto assignment in order of appearance by PHP. |
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327 | * |
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328 | * @param string $tableKey A column to use as an index for the returned array. |
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329 | * @param string $query A MySQL query |
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330 | * @param array|string $parameters Optional parameters for vsprintf (array) or sprintf (string) to use for formatting the query. |
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331 | * @param string $nullKey Optional fallback column to use as an index if the $tableKey param isn't found in a returned record. |
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332 | * @param callable $errorHandler A callback that will run in the event of an error instead of static::handleError |
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333 | * @return array Result from query or an empty array if nothing found. |
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334 | */ |
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335 | 2 | public static function table($tableKey, $query, $parameters = [], $nullKey = '', $errorHandler = null) |
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336 | { |
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337 | // execute query |
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338 | 2 | $result = static::query($query, $parameters, $errorHandler); |
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339 | |||
340 | 2 | $records = []; |
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341 | 2 | while ($record = $result->fetch(PDO::FETCH_ASSOC)) { |
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342 | 2 | $records[$record[$tableKey] ? $record[$tableKey] : $nullKey] = $record; |
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343 | } |
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344 | |||
345 | 2 | return $records; |
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346 | } |
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347 | |||
348 | /** |
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349 | * Runs a query and returns all results as an associative array. |
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350 | * |
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351 | * @param string $query A MySQL query |
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352 | * @param array|string $parameters Optional parameters for vsprintf (array) or sprintf (string) to use for formatting the query. |
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353 | * @param callable $errorHandler A callback that will run in the event of an error instead of static::handleError |
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354 | * @return array Result from query or an empty array if nothing found. |
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355 | */ |
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356 | 34 | public static function allRecords($query, $parameters = [], $errorHandler = null) |
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357 | { |
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358 | // execute query |
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359 | 34 | $result = static::query($query, $parameters, $errorHandler); |
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360 | |||
361 | 32 | $records = []; |
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362 | 32 | while ($record = $result->fetch(PDO::FETCH_ASSOC)) { |
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363 | 32 | $records[] = $record; |
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364 | } |
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365 | |||
366 | 32 | return $records; |
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367 | } |
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368 | |||
369 | |||
370 | /** |
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371 | * Gets you some column from every record. |
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372 | * |
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373 | * @param string $valueKey The name of the column you want. |
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374 | * @param string $query A MySQL query |
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375 | * @param array|string $parameters Optional parameters for vsprintf (array) or sprintf (string) to use for formatting the query. |
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376 | * @param callable $errorHandler A callback that will run in the event of an error instead of static::handleError |
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377 | * @return array The column provided in $valueKey from each found record combined as an array. Will be an empty array if no records are found. |
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378 | */ |
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379 | 1 | public static function allValues($valueKey, $query, $parameters = [], $errorHandler = null) |
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380 | { |
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381 | // execute query |
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382 | 1 | $result = static::query($query, $parameters, $errorHandler); |
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383 | |||
384 | 1 | $records = []; |
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385 | 1 | while ($record = $result->fetch(PDO::FETCH_ASSOC)) { |
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386 | 1 | $records[] = $record[$valueKey]; |
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387 | } |
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388 | |||
389 | 1 | return $records; |
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390 | } |
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391 | |||
392 | /** |
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393 | * Unsets static::$_record_cache[$cacheKey] |
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394 | * |
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395 | * @param string $cacheKey |
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396 | * @return void |
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397 | * |
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398 | * @uses static::$_record_cache |
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399 | */ |
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400 | 21 | public static function clearCachedRecord($cacheKey) |
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401 | { |
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402 | 21 | unset(static::$_record_cache[$cacheKey]); |
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403 | } |
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404 | |||
405 | /** |
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406 | * Returns the first database record from a query with caching |
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407 | * |
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408 | * It is recommended that you LIMIT 1 any records you want out of this to avoid having the database doing any work. |
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409 | * |
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410 | * @param string $cacheKey A key for the cache to use for this query. If the key is found in the existing cache will return that instead of running the query. |
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411 | * @param string $query A MySQL query |
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412 | * @param array|string $parameters Optional parameters for vsprintf (array) or sprintf (string) to use for formatting the query. |
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413 | * @param callable $errorHandler A callback that will run in the event of an error instead of static::handleError |
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414 | * @return array Result from query or an empty array if nothing found. |
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415 | * |
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416 | * @uses static::$_record_cache |
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417 | */ |
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418 | 3 | public static function oneRecordCached($cacheKey, $query, $parameters = [], $errorHandler = null) |
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419 | { |
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420 | |||
421 | // check for cached record |
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422 | 3 | if (array_key_exists($cacheKey, static::$_record_cache)) { |
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423 | // return cache hit |
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424 | 1 | return static::$_record_cache[$cacheKey]; |
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425 | } |
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426 | |||
427 | // preprocess and execute query |
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428 | 3 | $result = static::query($query, $parameters, $errorHandler); |
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429 | |||
430 | // get record |
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431 | 2 | $record = $result->fetch(PDO::FETCH_ASSOC); |
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432 | |||
433 | // save record to cache |
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434 | 2 | static::$_record_cache[$cacheKey] = $record; |
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435 | |||
436 | // return record |
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437 | 2 | return $record; |
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438 | } |
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439 | |||
440 | |||
441 | /** |
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442 | * Returns the first database record from a query. |
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443 | * |
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444 | * It is recommended that you LIMIT 1 any records you want out of this to avoid having the database doing any work. |
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445 | * |
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446 | * @param string $query A MySQL query |
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447 | * @param array|string $parameters Optional parameters for vsprintf (array) or sprintf (string) to use for formatting the query. |
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448 | * @param callable $errorHandler A callback that will run in the event of an error instead of static::handleError |
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449 | * @return array Result from query or an empty array if nothing found. |
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450 | */ |
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451 | 95 | public static function oneRecord($query, $parameters = [], $errorHandler = null) |
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452 | { |
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453 | // preprocess and execute query |
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454 | 95 | $result = static::query($query, $parameters, $errorHandler); |
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455 | |||
456 | // get record |
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457 | 95 | $record = $result->fetch(PDO::FETCH_ASSOC); |
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458 | |||
459 | // return record |
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460 | 95 | return $record; |
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461 | } |
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462 | |||
463 | /** |
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464 | * Returns the first value of the first database record from a query. |
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465 | * |
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466 | * @param string $query A MySQL query |
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467 | * @param array|string $parameters Optional parameters for vsprintf (array) or sprintf (string) to use for formatting the query. |
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468 | * @param callable $errorHandler A callback that will run in the event of an error instead of static::handleError |
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469 | * @return string|false First field from the first record from a query or false if nothing found. |
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470 | */ |
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471 | 30 | public static function oneValue($query, $parameters = [], $errorHandler = null) |
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472 | { |
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473 | // get the first record |
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474 | 30 | $record = static::oneRecord($query, $parameters, $errorHandler); |
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475 | |||
476 | 30 | if (!empty($record)) { |
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477 | // return first value of the record |
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478 | 30 | return array_shift($record); |
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479 | } else { |
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480 | 1 | return false; |
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481 | } |
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482 | } |
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483 | |||
484 | /** |
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485 | * Handles any errors that are thrown by PDO |
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486 | * |
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487 | * If App::$App->Config['environment'] is 'dev' this method will attempt to hook into whoops and provide it with information about this query. |
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488 | * |
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489 | * @throws \RuntimeException Database error! |
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490 | * |
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491 | * @param Exception $e |
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492 | * @param string $query The query which caused the error. |
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493 | * @param boolean|array $queryLog An array created by startQueryLog containing logging information about this query. |
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494 | * @param callable $errorHandler An array handler to use instead of this one. If you pass this in it will run first and return directly. |
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495 | * @return void|mixed If $errorHandler is set to a callable it will try to run it and return anything that it returns. Otherwise void |
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496 | */ |
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497 | 15 | public static function handleException(Exception $e, $query = '', $queryLog = false, $errorHandler = null) |
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498 | { |
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499 | 15 | if (is_callable($errorHandler, false, $callable)) { |
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500 | 9 | return call_user_func($errorHandler, $e, $query, $queryLog); |
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501 | } |
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502 | |||
503 | // save queryLog |
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504 | 11 | if ($queryLog) { |
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505 | 1 | $error = static::getConnection()->errorInfo(); |
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506 | 1 | $queryLog['error'] = $error[2]; |
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507 | 1 | static::finishQueryLog($queryLog); |
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508 | } |
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509 | |||
510 | // get error message |
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511 | 11 | $error = static::getConnection()->errorInfo(); |
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512 | 11 | $message = $error[2]; |
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513 | |||
514 | 11 | if (App::$App->Config['environment']=='dev') { |
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515 | /** @var \Whoops\Handler\PrettyPageHandler */ |
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516 | 1 | $Handler = \Divergence\App::$App->whoops->popHandler(); |
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517 | |||
518 | 1 | if ($Handler::class === \Whoops\Handler\PrettyPageHandler::class) { |
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519 | 1 | $Handler->addDataTable("Query Information", [ |
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520 | 1 | 'Query' => $query, |
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521 | 1 | 'Error' => $message, |
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522 | 1 | 'ErrorCode' => static::getConnection()->errorCode(), |
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523 | 1 | ]); |
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524 | 1 | \Divergence\App::$App->whoops->pushHandler($Handler); |
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525 | } |
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526 | } |
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527 | 11 | throw new \RuntimeException(sprintf("Database error: [%s]", static::getConnection()->errorCode()).$message); |
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528 | } |
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529 | |||
530 | /** |
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531 | * Formats a query with vsprintf if you pass an array and sprintf if you pass a string. |
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532 | * |
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533 | * @param string $query A database query. |
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534 | * @param array|string $parameters Parameter(s) for vsprintf (array) or sprintf (string) |
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535 | * @return string A formatted query. |
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536 | */ |
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537 | 118 | protected static function preprocessQuery($query, $parameters = []) |
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538 | { |
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539 | 118 | if (is_array($parameters) && count($parameters)) { |
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540 | 6 | return vsprintf($query, $parameters); |
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541 | } else { |
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542 | 114 | if (isset($parameters)) { |
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543 | 52 | return sprintf($query, $parameters); |
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544 | } else { |
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545 | 96 | return $query; |
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546 | } |
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547 | } |
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548 | } |
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549 | |||
550 | /** |
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551 | * Creates an associative array containing the query and time_start |
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552 | * |
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553 | * @param string $query The query you want to start logging. |
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554 | * @return false|array If App::$App->Config['environment']!='dev' this will return false. Otherwise an array containing 'query' and 'time_start' members. |
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555 | */ |
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556 | 118 | protected static function startQueryLog($query) |
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557 | { |
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558 | 118 | if (App::$App->Config['environment']!='dev') { |
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559 | 115 | return false; |
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560 | } |
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561 | |||
562 | 4 | return [ |
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563 | 4 | 'query' => $query, |
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564 | 4 | 'time_start' => sprintf('%f', microtime(true)), |
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565 | 4 | ]; |
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566 | } |
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567 | |||
568 | /** |
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569 | * Uses the log array created by startQueryLog and sets 'time_finish' on it as well as 'time_duration_ms' |
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570 | * |
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571 | * If a PDO result is passed it will also set 'result_fields' and 'result_rows' on the passed in array. |
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572 | * |
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573 | * Probably gonna remove this entirely. Query logging should be done via services like New Relic. |
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574 | * |
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575 | * @param array|false $queryLog Passed by reference. The query log array created by startQueryLog |
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576 | * @param object|false $result The result from |
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577 | * @return void|false |
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578 | */ |
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579 | 108 | protected static function finishQueryLog(&$queryLog, $result = false) |
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580 | { |
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581 | 108 | if ($queryLog == false) { |
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582 | 106 | return false; |
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583 | } |
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584 | |||
585 | // save finish time and number of affected rows |
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586 | 3 | $queryLog['time_finish'] = sprintf('%f', microtime(true)); |
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587 | 3 | $queryLog['time_duration_ms'] = ($queryLog['time_finish'] - $queryLog['time_start']) * 1000; |
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588 | |||
589 | // save result information |
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590 | 3 | if ($result) { |
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591 | 1 | $queryLog['result_fields'] = $result->field_count; |
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592 | 1 | $queryLog['result_rows'] = $result->num_rows; |
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593 | } |
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594 | |||
595 | // build backtrace string |
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596 | // TODO: figure out a nice toString option that isn't too bulky |
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597 | //$queryLog['backtrace'] = debug_backtrace(); |
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598 | |||
599 | // monolog here |
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600 | } |
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601 | |||
602 | /** |
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603 | * Gets the database config and sets it to static::$Config |
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604 | * |
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605 | * @uses static::$Config |
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606 | * @uses App::config |
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607 | * |
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608 | * @return array static::$Config |
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609 | */ |
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610 | 3 | protected static function config() |
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611 | { |
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612 | 3 | if (empty(static::$Config)) { |
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613 | 1 | static::$Config = App::$App->config('db'); |
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614 | } |
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615 | |||
616 | 3 | return static::$Config; |
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617 | } |
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618 | |||
619 | /** |
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620 | * Gets the label we should use in the current run time based on App::$App->Config['environment'] |
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621 | * |
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622 | * @uses App::$App->Config |
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623 | * @uses static::$defaultProductionLabel |
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624 | * @uses static::$defaultDevLabel |
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625 | * |
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626 | * @return string The SQL config to use in the config based on the current environment. |
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627 | */ |
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628 | 1 | protected static function getDefaultLabel() |
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629 | { |
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630 | 1 | if (App::$App->Config['environment'] == 'production') { |
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631 | 1 | return static::$defaultProductionLabel; |
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632 | 1 | } elseif (App::$App->Config['environment'] == 'dev') { |
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633 | 1 | return static::$defaultDevLabel; |
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634 | } |
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635 | } |
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636 | } |
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637 |