_upgrade_422_find_genericons_files_in_folder( string $directory ): string[]

1780function _upgrade_422_find_genericons_files_in_folder( $directory ) {1781	$directory = trailingslashit( $directory );1782	$files     = array();1783 1784	if ( file_exists( "{$directory}example.html" )1785		/*1786		 * Note: str_contains() is not used here, as this file is included1787		 * when updating from older WordPress versions, in which case1788		 * the polyfills from wp-includes/compat.php may not be available.1789		 */1790		&& false !== strpos( file_get_contents( "{$directory}example.html" ), '<title>Genericons</title>' )1791	) {1792		$files[] = "{$directory}example.html";1793	}1794 1795	$dirs = glob( $directory . '*', GLOB_ONLYDIR );1796	$dirs = array_filter(1797		$dirs,1798		static function ( $dir ) {1799			/*1800			 * Skip any node_modules directories.1801			 *1802			 * Note: str_contains() is not used here, as this file is included1803			 * when updating from older WordPress versions, in which case1804			 * the polyfills from wp-includes/compat.php may not be available.1805			 */1806			return false === strpos( $dir, 'node_modules' );1807		}1808	);1809 1810	if ( $dirs ) {1811		foreach ( $dirs as $dir ) {1812			$files = array_merge( $files, _upgrade_422_find_genericons_files_in_folder( $dir ) );1813		}1814	}1815 1816	return $files;1817}