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<?php |
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/* HEADER */ // phpcs:ignore |
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/** |
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* This class handles management of the actual PHP autoloader. |
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*/ |
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class PHP_Autoloader { |
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/** |
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* Registers the autoloader with PHP so that it can begin autoloading classes. |
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* |
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* @param Version_Loader $version_loader The class loader to use in the autoloader. |
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*/ |
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public function register_autoloader( $version_loader ) { |
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// Make sure no other autoloaders are registered. |
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$this->unregister_autoloader(); |
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// Set the global so that it can be used to load classes. |
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global $jetpack_autoloader_loader; |
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$jetpack_autoloader_loader = $version_loader; |
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// Ensure that the autoloader is first to avoid contention with others. |
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spl_autoload_register( array( self::class, 'load_class' ), true, true ); |
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} |
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/** |
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* Unregisters the active autoloader so that it will no longer autoload classes. |
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*/ |
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public function unregister_autoloader() { |
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// Remove any v2 autoloader that we've already registered. |
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$autoload_chain = spl_autoload_functions(); |
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foreach ( $autoload_chain as $autoloader ) { |
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// We can identify a v2 autoloader using the namespace. |
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$namespace_check = null; |
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// Functions are recorded as strings. |
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if ( is_string( $autoloader ) ) { |
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$namespace_check = $autoloader; |
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} elseif ( is_array( $autoloader ) && is_string( $autoloader[0] ) ) { |
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// Static method calls have the class as the first array element. |
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$namespace_check = $autoloader[0]; |
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} else { |
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// Since the autoloader has only ever been a function or a static method we don't currently need to check anything else. |
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continue; |
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} |
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// Check for the namespace without the generated suffix. |
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if ( 'Automattic\\Jetpack\\Autoloader\\jp' === substr( $namespace_check, 0, 32 ) ) { |
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spl_autoload_unregister( $autoloader ); |
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} |
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} |
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// Clear the global now that the autoloader has been unregistered. |
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global $jetpack_autoloader_loader; |
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$jetpack_autoloader_loader = null; |
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} |
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/** |
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* Loads a class file if one could be found. |
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* |
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* Note: This function is static so that the autoloader can be easily unregistered. If |
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* it was a class method we would have to unwrap the object to check the namespace. |
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* |
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* @param string $class_name The name of the class to autoload. |
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* |
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* @return bool Indicates whether or not a class file was loaded. |
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*/ |
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View Code Duplication |
public static function load_class( $class_name ) { |
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global $jetpack_autoloader_loader; |
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if ( ! isset( $jetpack_autoloader_loader ) ) { |
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return; |
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} |
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$file = $jetpack_autoloader_loader->find_class_file( $class_name ); |
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if ( ! isset( $file ) ) { |
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return false; |
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} |
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require $file; |
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return true; |
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} |
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} |
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Automattic /
jetpack
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.