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run code in 300+ PHP versions simultaneously
<?php $sPhoneNumber = "+3999999999999"; $sPhoneNumber = "3999999999999"; $sPhoneNumber = "39 99999999999"; $sPhoneNumber = "0039 99999999999"; $sPhoneNumber = "+ 39 999 99999999"; $sPhoneNumber = "+003999999999999"; $result = preg_replace('~^[0\D]++|\D++~', '', $sPhoneNumber); echo $result;

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