$prefix The prefix/namespace, with trailing '\\' * @param string[]|string $paths The PSR-4 base directories * * @throws \InvalidArgumentException * * @return void */ public function setPsr4($prefix, $paths) { if (!$prefix) { $this->fallbackDirsPsr4 = (array) $paths; } else { $length = strlen($prefix); if ('\\' !== $prefix[$length - 1]) { throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator."); } $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length; $this->prefixDirsPsr4[$prefix] = (array) $paths; } } /** * Turns on searching the include path for class files. * * @param bool $useIncludePath * * @return void */ public function setUseIncludePath($useIncludePath) { $this->useIncludePath = $useIncludePath; } /** * Can be used to check if the autoloader uses the include path to check * for classes. * * @return bool */ public function getUseIncludePath() { return $this->useIncludePath; } /** * Turns off searching the prefix and fallback directories for classes * that have not been registered with the class map. * * @param bool $classMapAuthoritative * * @return void */ public function setClassMapAuthoritative($classMapAuthoritative) { $this->classMapAuthoritative = $classMapAuthoritative; } /** * Should class lookup fail if not found in the current class map? * * @return bool */ public function isClassMapAuthoritative() { return $this->classMapAuthoritative; } /** * APCu prefix to use to cache found/not-found classes, if the extension is enabled. * * @param string|null $apcuPrefix * * @return void */ public function setApcuPrefix($apcuPrefix) { $this->apcuPrefix = function_exists('apcu_fetch') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? $apcuPrefix : null; } /** * The APCu prefix in use, or null if APCu caching is not enabled. * * @return string|null */ public function getApcuPrefix() { return $this->apcuPrefix; } /** * Registers this instance as an autoloader. * * @param bool $prepend Whether to prepend the autoloader or not * * @return void */ public function register($prepend = false) { spl_autoload_register(array($this, 'loadClass'), true, $prepend); if (null === $this->vendorDir) { return; } if ($prepend) { self::$registeredLoaders = array($this->vendorDir => $this) + self::$registeredLoaders; } else { unset(self::$registeredLoaders[$this->vendorDir]); self::$registeredLoaders[$this->vendorDir] = $this; } } /** * Unregisters this instance as an autoloader. * * @return void */ public function unregister() { spl_autoload_unregister(array($this, 'loadClass')); if (null !== $this->vendorDir) { unset(self::$registeredLoaders[$this->vendorDir]); } } /** * Loads the given class or interface. * * @param string $class The name of the class * @return true|null True if loaded, null otherwise */ public function loadClass($class) { if ($file = $this->findFile($class)) { includeFile($file); return true; } return null; } /** * Finds the path to the file where the class is defined. * * @param string $class The name of the class * * @return string|false The path if found, false otherwise */ public function findFile($class) { // class map lookup if (isset($this->classMap[$class])) { return $this->classMap[$class]; } if ($this->classMapAuthoritative || isset($this->missingClasses[$class])) { return false; } if (null !== $this->apcuPrefix) { $file = apcu_fetch($this->apcuPrefix.$class, $hit); if ($hit) { return $file; } } $file = $this->findFileWithExtension($class, '.php'); // Search for Hack files if we are running on HHVM if (false === $file && defined('HHVM_VERSION')) { $file = $this->findFileWithExtension($class, '.hh'); } if (null !== $this->apcuPrefix) { apcu_add($this->apcuPrefix.$class, $file); } if (false === $file) { // Remember that this class does not exist. $this->missingClasses[$class] = true; } return $file; } /** * Returns the currently registered loaders indexed by their corresponding vendor directories. * * @return self[] */ public static function getRegisteredLoaders() { return self::$registeredLoaders; } /** * @param string $class * @param string $ext * @return string|false */ private function findFileWithExtension($class, $ext) { // PSR-4 lookup $logicalPathPsr4 = strtr($class, '\\', DIRECTORY_SEPARATOR) . $ext; $first = $class[0]; if (isset($this->prefixLengthsPsr4[$first])) { $subPath = $class; while (false !== $lastPos = strrpos($subPath, '\\')) { $subPath = substr($subPath, 0, $lastPos); $search = $subPath . '\\'; if (isset($this->prefixDirsPsr4[$search])) { $pathEnd = DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $lastPos + 1); foreach ($this->prefixDirsPsr4[$search] as $dir) { if (file_exists($file = $dir . $pathEnd)) { return $file; } } } } } // PSR-4 fallback dirs foreach ($this->fallbackDirsPsr4 as $dir) { if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr4)) { return $file; } } // PSR-0 lookup if (false !== $pos = strrpos($class, '\\')) { // namespaced class name $logicalPathPsr0 = substr($logicalPathPsr4, 0, $pos + 1) . strtr(substr($logicalPathPsr4, $pos + 1), '_', DIRECTORY_SEPARATOR); } else { // PEAR-like class name $logicalPathPsr0 = strtr($class, '_', DIRECTORY_SEPARATOR) . $ext; } if (isset($this->prefixesPsr0[$first])) { foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) { if (0 === strpos($class, $prefix)) { foreach ($dirs as $dir) { if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) { return $file; } } } } } // PSR-0 fallback dirs foreach ($this->fallbackDirsPsr0 as $dir) { if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) { return $file; } } // PSR-0 include paths. if ($this->useIncludePath && $file = stream_resolve_include_path($logicalPathPsr0)) { return $file; } return false; } } /** * Scope isolated include. * * Prevents access to $this/self from included files. * * @param string $file * @return void * @private */ function includeFile($file) { include $file; } Fatal error: Uncaught Error: Class 'Composer\Autoload\ClassLoader' not found in /var/www/vhosts/boevenvangen.nl/webspace/httpdocs/boevenvangen.nl-wordpress/wp-content/plugins/clean-and-simple-contact-form-by-meg-nicholas/vendor/composer/autoload_real.php:28 Stack trace: #0 /var/www/vhosts/boevenvangen.nl/webspace/httpdocs/boevenvangen.nl-wordpress/wp-content/plugins/clean-and-simple-contact-form-by-meg-nicholas/vendor/autoload.php(7): ComposerAutoloaderInit4648fd9422021576e0c7782334d115c4::getLoader() #1 /var/www/vhosts/boevenvangen.nl/webspace/httpdocs/boevenvangen.nl-wordpress/wp-content/plugins/clean-and-simple-contact-form-by-meg-nicholas/clean-and-simple-contact-form-by-meg-nicholas.php(84): require_once('/var/www/vhosts...') #2 /var/www/vhosts/boevenvangen.nl/webspace/httpdocs/boevenvangen.nl-wordpress/wp-settings.php(391): include_once('/var/www/vhosts...') #3 /var/www/vhosts/boevenvangen.nl/webspace/httpdocs/boevenvangen.nl-wordpress/wp-config.php(90): require_once('/var/www/vhosts...') #4 /var/www/vhosts/boevenva in /var/www/vhosts/boevenvangen.nl/webspace/httpdocs/boevenvangen.nl-wordpress/wp-content/plugins/clean-and-simple-contact-form-by-meg-nicholas/vendor/composer/autoload_real.php on line 28