PHP case-insensitive realpath()

realpathi.php

<?php

/**
 * Case-insensitive realpath()
 * @param string $path
 * @return string|false
 */
function realpathi($path)
{
	$me = __METHOD__;

	$path = rtrim(preg_replace('#[/\\\\]+#', DIRECTORY_SEPARATOR, $path), DIRECTORY_SEPARATOR);
	$realPath = realpath($path);
	if ($realPath !== false) {
		return $realPath;
	}

	$dir = dirname($path);
	if ($dir === $path) {
		return false;
	}
	$dir = $me($dir);
	if ($dir === false) {
		return false;
	}

	$search = strtolower(basename($path));
	$pattern = '';
	for ($pos = 0; $pos < strlen($search); $pos++) {
		$pattern .= sprintf('[%s%s]', $search[$pos], strtoupper($search[$pos]));
	}
	return current(glob($dir . DIRECTORY_SEPARATOR . $pattern));
}

Thank you! This function work nicely. I used to get file from samba via php on unix.