<?php

namespace utf8;


/**
 * UTF-8 aware alternative to stristr.
 *
 * Find first occurrence of a string using case insensitive comparison.
 *
 * @package php-utf8
 * @subpackage functions
 * @see http://www.php.net/strcasecmp
 * @uses utf8_strtolower
 * @param string $str
 * @param string $search
 * @return int
 */
function ifind($str, $search)
{
	if (strlen($search) == 0)
		return $str;

	$lstr = toLower($str);
	$lsearch = toLower($search);
	preg_match('/^(.*)'.preg_quote($lsearch).'/Us', $lstr, $matches);

	if (count($matches) == 2)
		return substr($str, strlen($matches[1]));

	return false;
}