Complex classes like Profile often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Profile, and based on these observations, apply Extract Interface, too.
1 | <?php |
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27 | trait Profile { |
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28 | /** |
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29 | * Copy of columns list of users table for internal needs without Cache usage |
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30 | * @var array |
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31 | */ |
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32 | protected $users_columns = []; |
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33 | /** |
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34 | * Local cache of users data |
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35 | * @var array |
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36 | */ |
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37 | protected $data = []; |
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38 | /** |
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39 | * Whether to use memory cache (locally, inside object, may require a lot of memory if working with many users together) |
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40 | * @var bool |
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41 | */ |
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42 | protected $memory_cache = true; |
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43 | 10 | protected function initialize_data () { |
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51 | /** |
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52 | * Get data item of specified user |
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53 | * |
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54 | * @param string|string[] $item |
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55 | * @param false|int $user If not specified - current user assumed |
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56 | * |
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57 | * @return false|int|mixed[]|string|Properties If <i>$item</i> is integer - cs\User\Properties object will be returned |
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58 | */ |
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59 | 8 | function get ($item, $user = false) { |
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65 | /** |
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66 | * Get data item of specified user |
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67 | * |
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68 | * @param string|string[] $item |
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69 | * @param false|int $user If not specified - current user assumed |
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70 | * |
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71 | * @return false|int|string|mixed[] |
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72 | */ |
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73 | 8 | protected function get_internal ($item, $user = false) { |
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74 | 8 | $user = (int)$user ?: $this->id; |
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75 | 8 | if (isset($this->data[$user])) { |
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76 | 6 | $data = $this->data[$user]; |
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77 | } else { |
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78 | 8 | $data = $this->cache->get( |
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79 | $user, |
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80 | function () use ($user) { |
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81 | 8 | return $this->db()->qf( |
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82 | "SELECT * |
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83 | FROM `[prefix]users` |
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84 | 8 | WHERE `id` = $user |
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85 | 8 | LIMIT 1" |
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86 | 8 | ) ?: false; |
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87 | 8 | } |
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88 | ); |
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89 | 8 | if (!$data) { |
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90 | 4 | return false; |
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91 | 8 | } elseif ($this->memory_cache || $user = User::GUEST_ID) { |
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92 | 8 | $this->data[$user] = $data; |
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93 | } |
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94 | } |
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95 | /** |
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96 | * If get an array of values |
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97 | */ |
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98 | 8 | if (is_array($item)) { |
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99 | 6 | $result = []; |
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100 | /** |
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101 | * Trying to get value from the local cache, or make up an array of missing values |
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102 | */ |
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103 | 6 | foreach ($item as $i) { |
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104 | 6 | if (in_array($i, $this->users_columns)) { |
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105 | 6 | $result[$i] = $data[$i]; |
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106 | } |
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107 | } |
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108 | 6 | return $result; |
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109 | } |
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110 | 8 | return in_array($item, $this->users_columns) ? $data[$item] : false; |
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111 | } |
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112 | /** |
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113 | * Set data item of specified user |
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114 | * |
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115 | * @param array|string $item Item-value array may be specified for setting several items at once |
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116 | * @param int|null|string $value |
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117 | * @param false|int $user If not specified - current user assumed |
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118 | * |
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119 | * @return bool |
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120 | */ |
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121 | 4 | function set ($item, $value = null, $user = false) { |
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122 | 4 | $user = (int)$user ?: $this->id; |
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123 | 4 | $data_set = []; |
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124 | 4 | if (!$this->set_internal($item, $value, $user, $data_set)) { |
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125 | return false; |
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126 | } |
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127 | 4 | if (!$data_set) { |
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128 | return true; |
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129 | } |
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130 | 4 | $update = []; |
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131 | 4 | foreach (array_keys($data_set) as $column) { |
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132 | 4 | $update[] = "`$column` = '%s'"; |
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133 | } |
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134 | 4 | $update = implode(', ', $update); |
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135 | 4 | $result = $this->db_prime()->q( |
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136 | "UPDATE `[prefix]users` |
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137 | 4 | SET $update |
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138 | 4 | WHERE `id` = '$user'", |
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139 | 4 | xap($data_set, false) |
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140 | ); |
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141 | 4 | if ($result) { |
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142 | 4 | unset($this->data[$user], $this->cache->$user); |
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143 | } |
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144 | 4 | return (bool)$result; |
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145 | } |
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146 | /** |
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147 | * Set data item of specified user |
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148 | * |
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149 | * @param array|string $item Item-value array may be specified for setting several items at once |
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150 | * @param int|null|string $value |
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151 | * @param int $user If not specified - current user assumed |
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152 | * @param array $data_set |
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153 | * |
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154 | * @return bool |
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155 | */ |
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156 | 4 | protected function set_internal ($item, $value, $user, &$data_set) { |
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157 | 4 | if (is_array($item)) { |
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158 | $result = true; |
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159 | foreach ($item as $i => $v) { |
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160 | $result = $result && $this->set_internal($i, $v, $user, $data_set); |
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161 | } |
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162 | return $result; |
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163 | } |
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164 | 4 | if (!$this->set_internal_allowed($user, $item, $value)) { |
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165 | return false; |
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166 | } |
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167 | 4 | $old_value = $this->get($item, $user); |
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168 | 4 | if ($value == $old_value) { |
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169 | return true; |
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170 | } |
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171 | 4 | if ($item == 'language') { |
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172 | $value = $value ? Language::instance()->get('clanguage', $value) : ''; |
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173 | 4 | } elseif ($item == 'timezone') { |
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174 | $value = in_array($value, get_timezones_list(), true) ? $value : ''; |
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175 | 4 | } elseif ($item == 'avatar') { |
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176 | if ( |
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177 | strpos($value, 'http://') !== 0 && |
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178 | strpos($value, 'https://') !== 0 |
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179 | ) { |
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180 | $value = ''; |
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181 | } else { |
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182 | $Event = Event::instance(); |
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183 | $Event->fire( |
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184 | 'System/upload_files/del_tag', |
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185 | [ |
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186 | 'url' => $old_value, |
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187 | 'tag' => "users/$user/avatar" |
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188 | ] |
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189 | ); |
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190 | $Event->fire( |
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191 | 'System/upload_files/add_tag', |
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192 | [ |
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193 | 'url' => $value, |
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194 | 'tag' => "users/$user/avatar" |
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195 | ] |
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196 | ); |
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197 | } |
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198 | } |
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199 | /** |
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200 | * @var string $item |
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201 | */ |
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202 | 4 | $data_set[$item] = $value; |
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203 | 4 | if (in_array($item, ['login', 'email'], true)) { |
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204 | $old_value = $this->get($item.'_hash', $user); |
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205 | $data_set[$item.'_hash'] = hash('sha224', $value); |
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206 | unset($this->cache->$old_value); |
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207 | 4 | } elseif ($item == 'password_hash' || ($item == 'status' && $value == 0)) { |
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208 | 4 | Session::instance()->del_all($user); |
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209 | } |
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210 | 4 | return true; |
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211 | } |
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212 | /** |
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213 | * Check whether setting specified item to specified value for specified user is allowed |
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214 | * |
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215 | * @param int $user |
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216 | * @param string $item |
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217 | * @param string $value |
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218 | * |
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219 | * @return bool |
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220 | */ |
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221 | 4 | protected function set_internal_allowed ($user, $item, $value) { |
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222 | if ( |
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223 | 4 | $user == User::GUEST_ID || |
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224 | 4 | $item == 'id' || |
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225 | 4 | !in_array($item, $this->users_columns, true) |
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226 | ) { |
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227 | return false; |
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228 | } |
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229 | 4 | if (in_array($item, ['login', 'email'], true)) { |
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230 | $value = mb_strtolower($value); |
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231 | if ( |
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232 | $item == 'email' && |
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233 | !filter_var($value, FILTER_VALIDATE_EMAIL) |
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234 | ) { |
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235 | return false; |
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236 | } |
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237 | if ($value == $this->get($item, $user)) { |
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238 | return true; |
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239 | } |
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240 | return !$this->get_id(hash('sha224', $value)); |
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241 | } |
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242 | 4 | return true; |
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243 | } |
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244 | /** |
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245 | * Get user id by login or email hash (sha224) (hash from lowercase string) |
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246 | * |
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247 | * @param string $login_hash Login or email hash |
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248 | * |
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249 | * @return false|int User id if found and not guest, otherwise - boolean <i>false</i> |
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250 | */ |
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251 | 6 | function get_id ($login_hash) { |
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272 | /** |
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273 | * Get user avatar, if no one present - uses Gravatar |
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274 | * |
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275 | * @param int|null $size Avatar size, if not specified or resizing is not possible - original image is used |
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276 | * @param false|int $user If not specified - current user assumed |
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277 | * |
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278 | * @return string |
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279 | */ |
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280 | 2 | function avatar ($size = null, $user = false) { |
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294 | /** |
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295 | * Get user name or login or email, depending on existing information |
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296 | * |
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297 | * @param false|int $user If not specified - current user assumed |
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298 | * |
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299 | * @return string |
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300 | */ |
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301 | 2 | function username ($user = false) { |
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315 | /** |
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316 | * Disable memory cache |
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317 | * |
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318 | * Memory cache stores users data inside User class in order to get data faster next time. |
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319 | * But in case of working with large amount of users this cache can be too large. Disabling will cause some performance drop, but save a lot of RAM. |
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320 | */ |
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321 | 4 | function disable_memory_cache () { |
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322 | 4 | $this->memory_cache = false; |
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323 | 4 | $this->data = []; |
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324 | 4 | } |
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325 | /** |
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326 | * Returns array of users columns, available for getting of data |
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327 | * |
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328 | * @return array |
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329 | */ |
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330 | function get_users_columns () { |
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333 | } |
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334 |