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run code in 200+ php & hhvm versions
Bugs & Features
<?php $cardNumber = '9600999999990'; $number = (int) \mb_substr($cardNumber, \mb_strlen('9600'), -1); var_dump($number);
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0rc3
int(99999999)