RandomArray/stringContainsOnlyZeros.inc.php

Created October 2, 2016 21:17

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Function returns true if string contains only zeros. Used to check for invalid serial numbers consisting of only zeros.

Raw

stringContainsOnlyZeros.inc.php

	<?php

	function stringContainsOnlyZeros($s){
	return (is_numeric($s) && (int)$s===0);
	}

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