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@ 2015-11-12T21:46:46Z

<?php
class Test {

    public static function validateUPCA($value)
	{
		$upc = strval($value);
		$stringLength = strlen($upc);

		if($stringLength < 12 || $stringLength > 13 || intval($upc)==0)
		{
			return false;
		}
	
		$odd_sum = 0;
		$even_sum = 0;

		for($i = 0; $i < $stringLength - 1; $i++)
		{
			if($i % 2 === 1)
			{
				$even_sum += $upc[$i];
			}
			else
			{
				$odd_sum += $upc[$i];
			}
		}

        if ($stringLength == 12)
        {
            // UPC-A format. Odd Sum * 3
            $total_sum = $even_sum + $odd_sum * 3;
        }
        else
        {
            // EAN format. Even Sum * 3
            $total_sum = $odd_sum + $even_sum * 3;
        }

		$modulo10 = $total_sum % 10;
		$check_digit = $modulo10 == 0 ? 0 : 10 - $modulo10;
	
		return $upc[$stringLength - 1] == $check_digit;
	}
}
	    $value = 840018115309;
	    $res = Test.validateUPCA($value);
	    echo "res: $res\n";

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught Error: Undefined constant "Test" in /in/irZ9r:47 Stack trace: #0 {main} thrown in /in/irZ9r on line 47
Process exited with code 255.

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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