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@ 2015-07-30T13:18:53Z

<?php

$k = 201435;
$str = strval($k);
$year = intval(substr($str,0,4));
$month = intval(substr($str,4));
while($month>12){
	$month = $month-12;
	$year++;
}

var_dump($month, $year);

Output
Performance
VLD
References
Branches

substr: documentation ( source)
var_dump: documentation ( source)

preferences:dark modelive preview

28.97 ms | 402 KiB | 5 Q