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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Fetch versions from changewindows.org  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * © 2014-present CHANGEWINDOWS  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Disclaimer  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * All trademarks mentioned are the property of their respective owners. The content generated by this script  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * comes from changewindows.org and may not be accurate.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class ChangeWindows  | 
            
                            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static $errors = array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        'could_not_fetch_version' => 'Could not fetch current version from ChangeWindows',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        'invalid_version' => 'Windows version is invalid',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        'could_not_fetch_page' => 'Could not fetch page from ChangeWindows'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function fetchVersions()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $windowsVersions = json_decode(file_get_contents(__DIR__ . '/windowsVersions.json'), true);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!count($windowsVersions)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $currentVersion = explode('.', self::fetchCurrentVersion(), 2); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (!isset($currentVersion[0])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                throw new Exception(self::$errors['invalid_version']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $windowsVersions = self::fetchVersion($windowsVersions, $currentVersion[0]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self::writeWindowsVersions($windowsVersions);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            reset($windowsVersions);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $firstVersion = key($windowsVersions);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            end($windowsVersions);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $lastVersion = key($windowsVersions);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $result = self::fetchVersion($windowsVersions, $firstVersion);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $windowsVersions = $result;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } catch (Exception $e) { | 
            
                            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $windowsVersions = self::fetchVersion($windowsVersions, $lastVersion);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self::writeWindowsVersions($windowsVersions);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function fetchVersion($windowsVersions, $version)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $siblingVersions = self::fetchPage($version);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $windowsVersions[$version] = true;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::writeWindowsVersions($windowsVersions);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                        if (isset($siblingVersions[0]) && !isset($windowsVersions[$siblingVersions[0]])) { | 
            
                            
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                            $windowsVersions = self::fetchVersion($windowsVersions, $siblingVersions[0]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                        if (isset($siblingVersions[1]) && !isset($windowsVersions[$siblingVersions[1]])) { | 
            
                            
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                            $windowsVersions = self::fetchVersion($windowsVersions, $siblingVersions[1]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $windowsVersions;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function writeWindowsVersions($windowsVersions)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ksort($windowsVersions);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        file_put_contents(__DIR__ . '/windowsVersions.json', json_encode($windowsVersions, JSON_PRETTY_PRINT));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function fetchCurrentVersion()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $content = file_get_contents('https://changewindows.org/filter/pc/all/current/month/true'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!$content) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new Exception(self::$errors['could_not_fetch_version']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $content = explode('class="timeline"', $content, 2); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!isset($content[1])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new Exception(self::$errors['could_not_fetch_version']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $content = explode('build"', $content[1], 2); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!isset($content[1])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new Exception(self::$errors['could_not_fetch_version']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        preg_match("/(\d*\.\d*)<\/div>/", $content[1], $matches); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!isset($matches[1])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new Exception(self::$errors['could_not_fetch_version']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $matches[1];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function fetchPage($version)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $url = "https://changewindows.org/build/{$version}/pc"; | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $content = file_get_contents($url);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $siblingVersions = self::fetchSiblingVersions($content);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::fetchEdgeVersion($content);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $siblingVersions;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private static function fetchEdgeVersion($content)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        preg_match('/<h4[^>]*> *Edge ([\d\.]*) *<\/h4>/', $content, $edge); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        preg_match('/<h4[^>]*>EdgeHTML ([\d\.]*)<\/h4>/', $content, $edgeHtml); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (isset($edge[1]) && isset($edgeHtml[1])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self::writeEdgeVersion($edgeHtml[1], $edge[1]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                View Code Duplication | 
                    private static function writeEdgeVersion($edgeHtml, $edge)  | 
            
                            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $file = __DIR__ . '/../../src/edgeVersionMap.php';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $currentVersions = require $file;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if (!isset($currentVersions[$edgeHtml])) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $currentVersions[$edgeHtml] = $edge;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            ksort($currentVersions);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $content = '';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            foreach ($currentVersions as $edgeHtml => $edge) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                                $content .= "    '{$edgeHtml}' => '{$edge}'," . PHP_EOL; | 
            
            
                                                                        
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $data = <<<PHP  | 
            
            
                                                                        
                            
            
                                    
            
            
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                <?php  | 
            
            
                                                                        
                            
            
                                    
            
            
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                return array(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    %s  | 
            
            
                                                                        
                            
            
                                    
            
            
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                );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                 | 
                PHP;  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    129
                 | 
                                    
                                                     | 
                
                 | 
                            file_put_contents($file, sprintf($data, trim($content)));  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    130
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    131
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    132
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    133
                 | 
                                    
                                                     | 
                
                 | 
                    private static function fetchSiblingVersions($content)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    134
                 | 
                                    
                                                     | 
                
                 | 
                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    135
                 | 
                                    
                                                     | 
                
                 | 
                        if (!$content) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                            throw new Exception(self::$errors['could_not_fetch_page']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                        $content = explode('build-sidebar', $content, 2); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                        if (!isset($content[1])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                            throw new Exception(self::$errors['could_not_fetch_page']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                        $content = explode('fa-angle-left', $content[1]); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                        if (!isset($content[1])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    144
                 | 
                                    
                                                     | 
                
                 | 
                            throw new Exception(self::$errors['could_not_fetch_page']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    145
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    146
                 | 
                                    
                                                     | 
                
                 | 
                        $content = explode('fa-angle-right', $content[1]); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
                 | 
                                    
                                                     | 
                
                 | 
                        if (!isset($content[0])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    148
                 | 
                                    
                                                     | 
                
                 | 
                            throw new Exception(self::$errors['could_not_fetch_page']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    149
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    150
                 | 
                                    
                                                     | 
                
                 | 
                        preg_match_all("/> *(\d+) *</", $content[0], $matches); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    151
                 | 
                                    
                                                     | 
                
                 | 
                        if (!isset($matches[1])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    152
                 | 
                                    
                                                     | 
                
                 | 
                            throw new Exception(self::$errors['could_not_fetch_page']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    153
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    154
                 | 
                                    
                                                     | 
                
                 | 
                        return $matches[1];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    155
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    156
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    157
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
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.