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include
, or for example
via PHP's auto-loading mechanism.
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1 | <?php |
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2 | |||
3 | //------------------------------------------------------------------------------ |
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4 | // |
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5 | // eTraxis - Records tracking web-based system |
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6 | // Copyright (C) 2005-2011 Artem Rodygin |
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7 | // |
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8 | // This program is free software: you can redistribute it and/or modify |
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9 | // it under the terms of the GNU General Public License as published by |
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10 | // the Free Software Foundation, either version 3 of the License, or |
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11 | // (at your option) any later version. |
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12 | // |
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13 | // This program is distributed in the hope that it will be useful, |
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14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | // GNU General Public License for more details. |
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17 | // |
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18 | // You should have received a copy of the GNU General Public License |
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19 | // along with this program. If not, see <http://www.gnu.org/licenses/>. |
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20 | // |
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21 | //------------------------------------------------------------------------------ |
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22 | |||
23 | /** |
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24 | * Debugging |
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25 | * |
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26 | * This module implements debug logging to trace functions calls, values of parameters, performance, etc. |
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27 | * Module is configurable via {@link DEBUG_MODE} and {@link DEBUG_LOGS}. |
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28 | * |
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29 | * @package Engine |
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30 | * @subpackage Debugging |
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31 | */ |
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32 | |||
33 | //------------------------------------------------------------------------------ |
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34 | // Definitions. |
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35 | //------------------------------------------------------------------------------ |
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36 | |||
37 | /**#@+ |
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38 | * Debug mode. |
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39 | */ |
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40 | define('DEBUG_MODE_OFF', 0); // no debug logging |
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41 | define('DEBUG_MODE_TRACE', 1); // data-safe debug logging |
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42 | define('DEBUG_MODE_FULL', 2); // full debug logging |
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43 | /**#@-*/ |
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44 | |||
45 | /**#@+ |
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46 | * Type of debug message. |
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47 | */ |
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48 | define('DEBUG_LOG_OPENED', 1); // log is opened |
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49 | define('DEBUG_LOG_CLOSED', 2); // log is closed |
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50 | define('DEBUG_ERROR', 3); // error |
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51 | define('DEBUG_WARNING', 4); // warning |
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52 | define('DEBUG_NOTICE', 5); // information notice |
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53 | define('DEBUG_TRACE', 6); // trace route |
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54 | define('DEBUG_PERFORMANCE', 7); // performance |
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55 | define('DEBUG_DUMP', 8); // user data dump |
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56 | /**#@-*/ |
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57 | |||
58 | //------------------------------------------------------------------------------ |
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59 | // Classes. |
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60 | //------------------------------------------------------------------------------ |
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61 | |||
62 | /** |
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63 | * Debug logging, implemented via Singleton pattern. |
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64 | * @package Engine |
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65 | * @subpackage Debugging |
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66 | * @ignore |
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67 | */ |
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68 | class CDebugLog |
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69 | { |
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70 | // Static object of itself. |
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71 | private static $object = NULL; |
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72 | |||
73 | // Handle of opened debug log. |
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74 | private $handle = FALSE; |
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75 | |||
76 | // Timestamp when page is started to execute. |
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77 | // Used to profile execution performance. |
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78 | private $timer = NULL; |
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79 | |||
80 | // If debugging is not disabled (see {@link DEBUG_MODE}), |
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81 | // creates debug log file (see {@link DEBUG_LOGS}) and opens it for appending. |
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82 | private function __construct () |
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83 | { |
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84 | if (DEBUG_MODE != DEBUG_MODE_OFF) |
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85 | { |
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86 | $this->handle = fopen(DEBUG_LOGS . session_id() . '.log', 'a'); |
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87 | |||
88 | if ($this->handle !== FALSE) |
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89 | { |
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90 | list($msec, $sec) = explode(' ', microtime()); |
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91 | $this->timer = (float)$msec + (float)$sec; |
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92 | } |
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93 | } |
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94 | } |
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95 | |||
96 | // Closes opened debug log file. |
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97 | public function __destruct() |
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98 | { |
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99 | if ($this->handle !== FALSE) |
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100 | { |
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101 | list($msec, $sec) = explode(' ', microtime()); |
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102 | |||
103 | $timer = (float)$msec + (float)$sec; |
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104 | $timer -= $this->timer; |
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105 | |||
106 | self::write(DEBUG_PERFORMANCE, 'PHP time = ' . $timer); |
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107 | self::write(DEBUG_LOG_CLOSED); |
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108 | |||
109 | fclose($this->handle); |
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110 | $this->handle = FALSE; |
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111 | } |
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112 | } |
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113 | |||
114 | // Writes specified message to opened debug log. |
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115 | public static function write ($type, $str = NULL) |
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116 | { |
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117 | if (is_null(self::$object)) |
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118 | { |
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119 | self::$object = new CDebugLog(); |
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120 | self::write(DEBUG_LOG_OPENED, isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : NULL); |
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121 | } |
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122 | |||
123 | if ($type == DEBUG_DUMP && DEBUG_MODE != DEBUG_MODE_FULL) |
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124 | { |
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125 | return TRUE; |
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126 | } |
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127 | |||
128 | $res = FALSE; |
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129 | |||
130 | if (self::$object->handle !== FALSE) |
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131 | { |
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132 | $prefix = array |
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133 | ( |
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134 | DEBUG_LOG_OPENED => '[OPENED] ', |
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135 | DEBUG_LOG_CLOSED => "[CLOSED]\n", |
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136 | DEBUG_ERROR => '[ERROR] ', |
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137 | DEBUG_WARNING => '[WARNING] ', |
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138 | DEBUG_NOTICE => '[NOTICE] ', |
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139 | DEBUG_TRACE => '[TRACE] ', |
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140 | DEBUG_PERFORMANCE => '[PERFORM] ', |
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141 | DEBUG_DUMP => '[DUMP] ', |
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142 | ); |
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143 | |||
144 | $today = date('Y-m-d H:i:s '); |
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145 | $res = (fwrite(self::$object->handle, "{$today}{$prefix[$type]}{$str}\n") != -1); |
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146 | |||
147 | if ($type == DEBUG_ERROR) |
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148 | { |
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149 | error_log("eTraxis Error: {$str}"); |
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150 | } |
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151 | } |
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152 | |||
153 | return $res; |
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154 | } |
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155 | } |
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156 | |||
157 | //------------------------------------------------------------------------------ |
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158 | // Functions. |
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159 | //------------------------------------------------------------------------------ |
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160 | |||
161 | /** |
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162 | * Writes specified message to debug log. |
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163 | * |
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164 | * @param int $type Type of debug message. |
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165 | * @param string $str The message to be written. |
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166 | * @return bool TRUE on success, FALSE otherwise. |
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167 | */ |
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168 | function debug_write_log ($type, $str = NULL) |
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169 | { |
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170 | return CDebugLog::write($type, $str); |
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171 | } |
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172 | |||
173 | ?> |
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174 |
Using a closing tag in PHP files that only contain PHP code is not recommended as you might accidentally add whitespace after the closing tag which would then be output by PHP. This can cause severe problems, for example headers cannot be sent anymore.
A simple precaution is to leave off the closing tag as it is not required, and it also has no negative effects whatsoever.