Search files in php, recursive, regex

searchDirectory.php

/*
 * License: MIT
 */

/**
 * Search files in a directory by string or regex
 * @param  string $root Directory to search
 * @param  string $q Search term
 * @param  bool $recursive [optional] Search lower directories. Default = TRUE
 * @param  bool $isRegex [optional] Search term is a regular expression. Default = FASLE
 * @return SplFileInfo[] An array of files https://secure.php.net/manual/en/class.splfileinfo.php
 */
function searchDirectory($root, $q, $recursive = true, $isRegex = false) {

	if ($isRegex) {
		$regex = $q;
	} else {
		$regex = "|".preg_quote($q)."[^/\\\\]*$|i";
	}

	if ($recursive) {
		$directory = new RecursiveDirectoryIterator($root);
		$iterator = new RecursiveIteratorIterator($directory);
	} else {
		$iterator = new DirectoryIterator($root);
	}
	$files = new RegexIterator($iterator, $regex, RecursiveRegexIterator::MATCH);

	return iterator_to_array($files, false);
}