_upgrade_422_find_genericons_files_in_folder() │ WP 4.2.2

Recursively find Genericons example files in a given folder.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Returns

String[].

Usage

_upgrade_422_find_genericons_files_in_folder( $directory );
$directory(string) (required)
Directory path. Expects trailingslashed.

Changelog

Since 4.2.2 Introduced.

_upgrade_422_find_genericons_files_in_folder() code WP 6.9.1

wp-admin/includes/update-core.php 
function _upgrade_422_find_genericons_files_in_folder( $directory ) {
	$directory = trailingslashit( $directory );
	$files     = array();

	if ( file_exists( "{$directory}example.html" )
		/*
		 * Note: str_contains() is not used here, as this file is included
		 * when updating from older WordPress versions, in which case
		 * the polyfills from wp-includes/compat.php may not be available.
		 */
		&& false !== strpos( file_get_contents( "{$directory}example.html" ), '<title>Genericons</title>' )
	) {
		$files[] = "{$directory}example.html";
	}

	$dirs = glob( $directory . '*', GLOB_ONLYDIR );
	$dirs = array_filter(
		$dirs,
		static function ( $dir ) {
			/*
			 * Skip any node_modules directories.
			 *
			 * Note: str_contains() is not used here, as this file is included
			 * when updating from older WordPress versions, in which case
			 * the polyfills from wp-includes/compat.php may not be available.
			 */
			return false === strpos( $dir, 'node_modules' );
		}
	);

	if ( $dirs ) {
		foreach ( $dirs as $dir ) {
			$files = array_merge( $files, _upgrade_422_find_genericons_files_in_folder( $dir ) );
		}
	}

	return $files;
}