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<?php $a = "00211501600326941"; $b = "37137137137137137"; $a = str_split($a); $b = str_split($b); Foreach($a as $key => $val){ $temp[] = substr($val * $b[$key], -1); } Var_dump($temp); Echo implode("", $temp);
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(17) { [0]=> string(1) "0" [1]=> string(1) "0" [2]=> string(1) "2" [3]=> string(1) "3" [4]=> string(1) "7" [5]=> string(1) "5" [6]=> string(1) "0" [7]=> string(1) "7" [8]=> string(1) "6" [9]=> string(1) "0" [10]=> string(1) "0" [11]=> string(1) "3" [12]=> string(1) "6" [13]=> string(1) "2" [14]=> string(1) "9" [15]=> string(1) "2" [16]=> string(1) "7" } 00237507600362927

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