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Filename : compat.php

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<?php
namespace WordfenceLS;

class Model_Compat {
	public static function hex2bin($string) { //Polyfill for PHP < 5.4
		if (!is_string($string)) { return false; }
		if (strlen($string) % 2 == 1) { return false; }
		return pack('H*', $string);
	}
}