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<?php function callback($s) { return substr_replace($s[0], str_repeat('*', strlen($s[0])), 0, -4); } $values = array( '5746244234383238', '746244234383238', '46244234383238', '6244234383238', '244234383238', ); foreach ($values as $value) var_dump(preg_replace_callback('/\d{12,16}/', 'callback', $value));
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 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.5 - 7.2.33, 7.3.12 - 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 - 8.3.7
string(20) "****************3238" string(19) "***************3238" string(18) "**************3238" string(17) "*************3238" string(16) "************3238"
preferences:
220 ms | 406 KiB | 345 Q