Check if there RTL characters (Arabic, Persian, Hebrew)

is_rtl.php

<?php
/**
 * Is RTL
 * Check if there RTL characters (Arabic, Persian, Hebrew)
 * 
 * @author	Khaled Attia <sourcecode@khal3d.com>
 * @param	String	$string
 * @return	bool
 */

function is_rtl( $string ) {
	$rtl_chars_pattern = '/[\x{0590}-\x{05ff}\x{0600}-\x{06ff}]/u';
	return preg_match($rtl_chars_pattern, $string);
}

// Arabic Or Persian
var_dump(is_rtl('نص عربي أو فارسي'));

// Hebrew
var_dump(is_rtl('חופש למען פלסטין'));

// Latin
var_dump(is_rtl('Hello, World!'));