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                <?php   | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Install functions  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *   | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Used through vandor/bin/phpcompat_(en|dis)able  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class PHPCompatibility_Install { | 
            
                            
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                    static function enable() { | 
            
                            
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                        echo "Enabling PHPCompatibility\n";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::make_copy();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::register_in_cs();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    static function disable() { | 
            
                            
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                        echo "Disabling PHPCompatibility\n";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::remove_copy();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::unregister_from_cs();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                    static function register_in_cs() {  | 
            
                            
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                        $installed_paths = self::get_installed_path();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (in_array(__DIR__, $installed_paths)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            echo "Our path is already registered in PHP CodeSniffer\n";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            array_push($installed_paths, __DIR__);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self::set_installed_path($installed_paths);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            echo "Registered our path in PHP CodeSniffer\n";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                    static function unregister_from_cs() { | 
            
                            
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                        $installed_paths = self::get_installed_path();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (! in_array(__DIR__, $installed_paths)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            echo "Our path is not registered in PHP CodeSniffer\n";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $installed_paths = array_filter($installed_paths, function ($v) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return $v != __DIR__;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            });  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self::set_installed_path($installed_paths);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            echo "Unregistered our path in PHP CodeSniffer\n";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    static function make_copy() { | 
            
                            
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                        $srcDir = __DIR__;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $copy = __DIR__ .DIRECTORY_SEPARATOR.'PHPCompatibility';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if ( file_exists ($copy)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            echo "Copy workaround is already in place\n";  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            return;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        mkdir($copy);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        copy(__DIR__ .DIRECTORY_SEPARATOR.'ruleset.xml', $copy.DIRECTORY_SEPARATOR.'ruleset.xml');  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        copy(__DIR__ .DIRECTORY_SEPARATOR.'Sniff.php', $copy.DIRECTORY_SEPARATOR.'Sniff.php');  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $copy = str_replace('/', DIRECTORY_SEPARATOR, $copy); | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $srcDir = str_replace('/', DIRECTORY_SEPARATOR, $srcDir); | 
            
            
                                                                        
                            
            
                                    
            
            
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                            passthru('xcopy "'.$srcDir .DIRECTORY_SEPARATOR.'Sniffs" "'.$copy.DIRECTORY_SEPARATOR.'Sniffs" /S /E /I'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            passthru('cp -r "'.$srcDir .DIRECTORY_SEPARATOR.'Sniffs" "'.$copy.DIRECTORY_SEPARATOR.'Sniffs"'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        echo "Created copy workaround\n";  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }      | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    static function remove_copy() { | 
            
                            
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                        $copy = __DIR__ .DIRECTORY_SEPARATOR.'PHPCompatibility';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ( ! file_exists ($copy)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            echo "No copy workaround to remove\n";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $copy = str_replace('/', DIRECTORY_SEPARATOR, $copy); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            passthru('rmdir /S /Q "'.$copy.'"'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            passthru('rm -rf "'.$copy.'"'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        echo "Copy workaround removed\n";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    static function get_installed_path() { | 
            
                            
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                        $installed_paths = PHP_CodeSniffer::getConfigData('installed_paths'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ( $installed_paths === NULL or strlen($installed_paths) == 0 ) { | 
            
                            
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                            // Because: explode(',' , NULL) == array('') | 
            
                            
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                            // and we assert no data is empty array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return explode(',', $installed_paths); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    static function set_installed_path($array) { | 
            
                            
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                        if(count($array) == 0) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            PHP_CodeSniffer::setConfigData('installed_paths', NULL); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            PHP_CodeSniffer::setConfigData('installed_paths', implode(',', $array)); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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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.