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!'));

it's relay good.. and working !!

As valid if the entire website is RTL?

need fix in line 20
// Hebrew
var_dump(is_rtl('גם ישו דיבר עברית'));

You wrote Anti-Semitic line in the Hebrew, I can guess it's in purpose since you're from Egypt..... lame move.

Thanks for your great work, How I can know a text is completely Farsi or not, and how I can remove non Persian characters from a text?

hi, thanks for this work
we have problem if string contains both LTR and RTL characters
i made it fuzzy, that support mixed RTL&LTR strings
https://gist.github.com/mghayour/29899988098a5395a33af8763f92eded

thanks . its usefull

Thanks for sharing is_rtl function with us.
Its very fast. I just tested it and the following are results.

// Total Execution Time for is_rtl: 0.34484505653381 Seconds for 100000 iterations
as compared to my own function
// Total Execution Time for my_is_rtl: 12.653607130051 Seconds for 100000 iterations

Thanks for your great work.