<?php
function ean_checksum($eancode) {
if(strlen($eancode) != 12) {
return '-1';
}
$oddsum=0;
$evensum=0;
$total=0;
$eanvalue=$eancode;
$finalean = strrev(substr($eanvalue,0,12));
for($i=0;$i<strlen($finalean);$i++) {
if(($i % 2) == 0) {
$oddsum += intval($finalean[$i]);
}
else {
$evensum += intval($finalean[$i]);
}
}
$total=($oddsum * 3) + $evensum;
$check = intval(10 - ceil($total % 10.0)) %10;
return $check;
}
$ean = '074436100720';
echo ean_checksum($ean);
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- 8
preferences:
257.57 ms | 406 KiB | 459 Q