Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
1 | <?php |
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22 | class PHPCompatibility_Sniffs_PHP_NewClassesSniff extends PHPCompatibility_AbstractNewFeatureSniff |
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23 | { |
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24 | |||
25 | /** |
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26 | * A list of new classes, not present in older versions. |
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27 | * |
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28 | * The array lists : version number with false (not present) or true (present). |
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29 | * If's sufficient to list the first version where the class appears. |
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30 | * |
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31 | * @var array(string => array(string => bool)) |
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32 | */ |
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33 | protected $newClasses = array( |
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34 | 'libXMLError' => array( |
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35 | '5.0' => false, |
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36 | '5.1' => true |
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37 | ), |
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38 | |||
39 | 'DateTime' => array( |
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40 | '5.1' => false, |
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41 | '5.2' => true |
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42 | ), |
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43 | 'DateTimeZone' => array( |
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44 | '5.1' => false, |
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45 | '5.2' => true |
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46 | ), |
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47 | 'RegexIterator' => array( |
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48 | '5.1' => false, |
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49 | '5.2' => true |
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50 | ), |
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51 | 'RecursiveRegexIterator' => array( |
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52 | '5.1' => false, |
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53 | '5.2' => true |
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54 | ), |
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55 | |||
56 | 'DateInterval' => array( |
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57 | '5.2' => false, |
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58 | '5.3' => true |
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59 | ), |
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60 | 'DatePeriod' => array( |
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61 | '5.2' => false, |
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62 | '5.3' => true |
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63 | ), |
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64 | 'Phar' => array( |
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65 | '5.2' => false, |
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66 | '5.3' => true |
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67 | ), |
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68 | 'PharData' => array( |
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69 | '5.2' => false, |
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70 | '5.3' => true |
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71 | ), |
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72 | 'PharFileInfo' => array( |
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73 | '5.2' => false, |
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74 | '5.3' => true |
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75 | ), |
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76 | 'FilesystemIterator' => array( |
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77 | '5.2' => false, |
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78 | '5.3' => true |
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79 | ), |
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80 | 'GlobIterator' => array( |
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81 | '5.2' => false, |
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82 | '5.3' => true |
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83 | ), |
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84 | 'MultipleIterator' => array( |
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85 | '5.2' => false, |
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86 | '5.3' => true |
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87 | ), |
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88 | 'RecursiveTreeIterator' => array( |
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89 | '5.2' => false, |
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90 | '5.3' => true |
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91 | ), |
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92 | 'SplDoublyLinkedList' => array( |
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93 | '5.2' => false, |
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94 | '5.3' => true |
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95 | ), |
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96 | 'SplFixedArray' => array( |
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97 | '5.2' => false, |
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98 | '5.3' => true |
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99 | ), |
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100 | 'SplHeap' => array( |
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101 | '5.2' => false, |
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102 | '5.3' => true |
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103 | ), |
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104 | 'SplMaxHeap' => array( |
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105 | '5.2' => false, |
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106 | '5.3' => true |
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107 | ), |
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108 | 'SplMinHeap' => array( |
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109 | '5.2' => false, |
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110 | '5.3' => true |
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111 | ), |
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112 | 'SplPriorityQueue' => array( |
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113 | '5.2' => false, |
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114 | '5.3' => true |
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115 | ), |
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116 | 'SplQueue' => array( |
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117 | '5.2' => false, |
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118 | '5.3' => true |
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119 | ), |
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120 | 'SplStack' => array( |
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121 | '5.2' => false, |
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122 | '5.3' => true |
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123 | ), |
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124 | |||
125 | 'CallbackFilterIterator' => array( |
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126 | '5.3' => false, |
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127 | '5.4' => true |
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128 | ), |
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129 | 'RecursiveCallbackFilterIterator' => array( |
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130 | '5.3' => false, |
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131 | '5.4' => true |
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132 | ), |
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133 | 'ReflectionZendExtension' => array( |
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134 | '5.3' => false, |
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135 | '5.4' => true |
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136 | ), |
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137 | 'SessionHandler' => array( |
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138 | '5.3' => false, |
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139 | '5.4' => true |
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140 | ), |
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141 | 'SNMP' => array( |
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142 | '5.3' => false, |
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143 | '5.4' => true |
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144 | ), |
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145 | 'Transliterator' => array( |
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146 | '5.3' => false, |
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147 | '5.4' => true |
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148 | ), |
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149 | 'Spoofchecker' => array( |
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150 | '5.3' => false, |
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151 | '5.4' => true |
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152 | ), |
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153 | |||
154 | 'CURLFile' => array( |
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155 | '5.4' => false, |
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156 | '5.5' => true |
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157 | ), |
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158 | 'DateTimeImmutable' => array( |
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159 | '5.4' => false, |
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160 | '5.5' => true |
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161 | ), |
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162 | 'IntlCalendar' => array( |
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163 | '5.4' => false, |
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164 | '5.5' => true |
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165 | ), |
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166 | 'IntlGregorianCalendar' => array( |
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167 | '5.4' => false, |
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168 | '5.5' => true |
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169 | ), |
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170 | 'IntlTimeZone' => array( |
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171 | '5.4' => false, |
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172 | '5.5' => true |
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173 | ), |
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174 | 'IntlBreakIterator' => array( |
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175 | '5.4' => false, |
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176 | '5.5' => true |
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177 | ), |
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178 | 'IntlRuleBasedBreakIterator' => array( |
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179 | '5.4' => false, |
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180 | '5.5' => true |
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181 | ), |
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182 | 'IntlCodePointBreakIterator' => array( |
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183 | '5.4' => false, |
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184 | '5.5' => true |
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185 | ), |
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186 | |||
187 | ); |
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188 | |||
189 | /** |
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190 | * A list of new Exception classes, not present in older versions. |
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191 | * |
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192 | * The array lists : version number with false (not present) or true (present). |
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193 | * If's sufficient to list the first version where the class appears. |
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194 | * |
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195 | * {@internal Classes listed here do not need to be added to the $newClasses |
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196 | * property as well. |
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197 | * This list is automatically added to the $newClasses property |
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198 | * in the `register()` method.}} |
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199 | * |
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200 | * @var array(string => array(string => bool)) |
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201 | */ |
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202 | protected $newExceptions = array( |
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203 | 'Exception' => array( |
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204 | '5.0' => false, |
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205 | '5.1' => true |
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206 | ), |
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207 | 'ErrorException' => array( |
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208 | '5.0' => false, |
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209 | '5.1' => true |
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210 | ), |
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211 | 'BadFunctionCallException' => array( |
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212 | '5.0' => false, |
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213 | '5.1' => true |
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214 | ), |
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215 | 'BadMethodCallException' => array( |
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216 | '5.0' => false, |
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217 | '5.1' => true |
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218 | ), |
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219 | 'DomainException' => array( |
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220 | '5.0' => false, |
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221 | '5.1' => true |
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222 | ), |
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223 | 'InvalidArgumentException' => array( |
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224 | '5.0' => false, |
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225 | '5.1' => true |
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226 | ), |
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227 | 'LengthException' => array( |
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228 | '5.0' => false, |
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229 | '5.1' => true |
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230 | ), |
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231 | 'LogicException' => array( |
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232 | '5.0' => false, |
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233 | '5.1' => true |
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234 | ), |
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235 | 'OutOfBoundsException' => array( |
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236 | '5.0' => false, |
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237 | '5.1' => true |
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238 | ), |
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239 | 'OutOfRangeException' => array( |
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240 | '5.0' => false, |
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241 | '5.1' => true |
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242 | ), |
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243 | 'OverflowException' => array( |
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244 | '5.0' => false, |
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245 | '5.1' => true |
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246 | ), |
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247 | 'RangeException' => array( |
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248 | '5.0' => false, |
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249 | '5.1' => true |
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250 | ), |
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251 | 'RuntimeException' => array( |
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252 | '5.0' => false, |
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253 | '5.1' => true |
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254 | ), |
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255 | 'UnderflowException' => array( |
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256 | '5.0' => false, |
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257 | '5.1' => true |
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258 | ), |
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259 | 'UnexpectedValueException' => array( |
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260 | '5.0' => false, |
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261 | '5.1' => true |
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262 | ), |
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263 | 'DOMException' => array( |
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264 | // According to the docs introduced in PHP 5.0, but Exception was only introduced in 5.1. |
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265 | '5.0' => false, |
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266 | '5.1' => true |
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267 | ), |
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268 | 'mysqli_sql_exception' => array( |
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269 | // According to the docs introduced in PHP 5.0, but Exception was only introduced in 5.1. |
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270 | '5.0' => false, |
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271 | '5.1' => true |
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272 | ), |
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273 | 'PDOException' => array( |
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274 | '5.0' => false, |
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275 | '5.1' => true |
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276 | ), |
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277 | 'ReflectionException' => array( |
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278 | // According to the docs introduced in PHP 5.0, but Exception was only introduced in 5.1. |
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279 | '5.0' => false, |
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280 | '5.1' => true |
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281 | ), |
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282 | 'SoapFault' => array( |
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283 | // According to the docs introduced in PHP 5.0.1, but Exception was only introduced in 5.1. |
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284 | '5.0' => false, |
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285 | '5.1' => true |
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286 | ), |
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287 | |||
288 | 'PharException' => array( |
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289 | '5.2' => false, |
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290 | '5.3' => true |
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291 | ), |
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292 | |||
293 | 'SNMPException' => array( |
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294 | '5.3' => false, |
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295 | '5.4' => true |
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296 | ), |
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297 | |||
298 | 'IntlException' => array( |
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299 | '5.5.0' => false, |
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300 | '5.5.1' => true |
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301 | ), |
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302 | |||
303 | 'Error' => array( |
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304 | '5.6' => false, |
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305 | '7.0' => true |
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306 | ), |
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307 | 'ArithmeticError' => array( |
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308 | '5.6' => false, |
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309 | '7.0' => true |
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310 | ), |
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311 | 'AssertionError' => array( |
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312 | '5.6' => false, |
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313 | '7.0' => true |
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314 | ), |
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315 | 'DivisionByZeroError' => array( |
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316 | '5.6' => false, |
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317 | '7.0' => true |
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318 | ), |
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319 | 'ParseError' => array( |
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320 | '5.6' => false, |
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321 | '7.0' => true |
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322 | ), |
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323 | 'TypeError' => array( |
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324 | '5.6' => false, |
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325 | '7.0' => true |
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326 | ), |
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327 | 'UI\Exception\InvalidArgumentException' => array( |
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328 | '5.6' => false, |
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329 | '7.0' => true |
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330 | ), |
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331 | 'UI\Exception\RuntimeException' => array( |
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332 | '5.6' => false, |
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333 | '7.0' => true |
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334 | ), |
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335 | |||
336 | ); |
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337 | |||
338 | |||
339 | /** |
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340 | * Returns an array of tokens this test wants to listen for. |
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341 | * |
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342 | * @return array |
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343 | */ |
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344 | public function register() |
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369 | |||
370 | |||
371 | /** |
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372 | * Processes this test, when one of its tokens is encountered. |
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373 | * |
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374 | * @param PHP_CodeSniffer_File $phpcsFile The file being scanned. |
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375 | * @param int $stackPtr The position of the current token in |
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376 | * the stack passed in $tokens. |
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377 | * |
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378 | * @return void |
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379 | */ |
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380 | View Code Duplication | public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr) |
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400 | |||
401 | |||
402 | /** |
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403 | * Processes this test for when a token resulting in a singular class name is encountered. |
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404 | * |
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405 | * @param PHP_CodeSniffer_File $phpcsFile The file being scanned. |
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406 | * @param int $stackPtr The position of the current token in |
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407 | * the stack passed in $tokens. |
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408 | * |
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409 | * @return void |
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410 | */ |
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411 | private function processSingularToken(PHP_CodeSniffer_File $phpcsFile, $stackPtr) |
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444 | |||
445 | |||
446 | /** |
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447 | * Processes this test for when a function token is encountered. |
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448 | * |
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449 | * - Detect new classes when used as a type hint. |
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450 | * |
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451 | * @param PHP_CodeSniffer_File $phpcsFile The file being scanned. |
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452 | * @param int $stackPtr The position of the current token in |
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453 | * the stack passed in $tokens. |
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454 | * |
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455 | * @return void |
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456 | */ |
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457 | View Code Duplication | private function processFunctionToken(PHP_CodeSniffer_File $phpcsFile, $stackPtr) |
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478 | |||
479 | |||
480 | /** |
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481 | * Processes this test for when a catch token is encountered. |
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482 | * |
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483 | * - Detect exceptions when used in a catch statement. |
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484 | * |
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485 | * @param PHP_CodeSniffer_File $phpcsFile The file being scanned. |
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486 | * @param int $stackPtr The position of the current token in |
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487 | * the stack passed in $tokens. |
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488 | * |
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489 | * @return void |
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490 | */ |
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491 | private function processCatchToken(PHP_CodeSniffer_File $phpcsFile, $stackPtr) |
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544 | |||
545 | |||
546 | /** |
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547 | * Get the relevant sub-array for a specific item from a multi-dimensional array. |
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548 | * |
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549 | * @param array $itemInfo Base information about the item. |
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550 | * |
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551 | * @return array Version and other information about the item. |
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552 | */ |
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553 | public function getItemArray(array $itemInfo) |
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557 | |||
558 | |||
559 | /** |
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560 | * Get the error message template for this sniff. |
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561 | * |
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562 | * @return string |
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563 | */ |
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564 | protected function getErrorMsgTemplate() |
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568 | |||
569 | |||
570 | }//end class |
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571 |
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.