Convert numbers in Arabic

arabic_numerals.php

<?php

/**
 * Converts numbers in string from western to eastern Arabic numerals.
 *
 * @param  string $str Arbitrary text
 * @return string Text with western Arabic numerals converted into eastern Arabic numerals.
 */
function arabic_w2e($str) {
	$arabic_eastern = array('٠', '١', '٢', '٣', '٤', '٥', '٦', '٧', '٨', '٩');
	$arabic_western = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9');
	return str_replace($arabic_western, $arabic_eastern, $str);
}

/**
 * Converts numbers from eastern to western Arabic numerals.
 *
 * @param  string $str Arbitrary text
 * @return string Text with eastern Arabic numerals converted into western Arabic numerals.
 */
function arabic_e2w($str) {
	$arabic_eastern = array('٠', '١', '٢', '٣', '٤', '٥', '٦', '٧', '٨', '٩');
	$arabic_western = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9');
	return str_replace($arabic_eastern, $arabic_western, $str);
}

/*/ Test 
	echo arabic_w2e("1234567890"); // Outputs: ١٢٣٤٥٦٧٨٩٠
	echo arabic_e2w("١٢٣٤٥٦٧٨٩٠"); // Outputs: 1234567890
//*/