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@ 2026-03-03T12:51:38Z

<?php

$pattern = '/\b(?:
    \d{6}[xX*]{2,9}\d{4}            # BIN + masked + last4
    |
    (?:\d{4}|[xX*]{4})(?:[ .-]?(?:\d{4}|[xX*]{4})){2,3}  # blocs de 4
)\b/x';

$data = '497040726';

preg_match($pattern, $data, $matches);

var_dump($matches);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
preg_match: documentation ( source)

preferences:dark modelive previewkey bindings

39.24 ms | 706 KiB | 5 Q