Online PHP editor | output for UvK5H

@ 2014-05-09T13:00:20Z

<?php
		function isIBAN ($iban) {
			
			// Remove all whitespace
			$iban = preg_replace('/\s/', '', $iban);
			
			$iban = strtoupper($iban);
			
			if(strlen($iban) > 34) {
				return false;
			}
			
			if (!self::isAlphaNum($iban)) {
				return false;
			}
			
			// Create control number
			$alfa = str_split('ABCDEFGHIJKLMNOPQRSTUVWXYZ');
			for($i = 1; $i < 27; ++$i) {
				$alfa_replace[] = $i + 9;
			}
			$controlNumber = str_replace($alfa, $alfa_replace, substr($iban, 4, strlen($iban)-4) . substr($iban, 0, 2) . "00");
			$controlNumber = 98 - (int)bcmod($controlNumber, 97);
			
			return ((int)$controlNumber === (int)substr($iban, 2, 2));
		}
var_dump(isIBAN('999'));

Output for 5.2.3 - 5.2.17, 5.3.0 - 5.3.28, 5.4.0 - 5.4.28, 5.5.0 - 5.5.12: Fatal error: Cannot access self:: when no class scope is active in /in/UvK5H on line 13
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.2: Fatal error: Cannot access self:: when no class scope is active in /in/UvK5H on line 13 
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9: Fatal error: Undefined class name 'self' in /in/UvK5H on line 13 
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Undefined class name 'self' in /in/UvK5H on line 13

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