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<?php function isIBAN ($iban) { // Remove all whitespace $iban = preg_replace('/\s/', '', $iban); $iban = strtoupper($iban); if(strlen($iban) > 34) { return false; } // Create control number $alfa = str_split('ABCDEFGHIJKLMNOPQRSTUVWXYZ'); for($i = 1; $i < 27; ++$i) { $alfa_replace[] = $i + 9; } $controlNumber = str_replace($alfa, $alfa_replace, substr($iban, 4, strlen($iban)-4) . substr($iban, 0, 2) . "00"); $controlNumber = 98 - (int)bcmod($controlNumber, 97); return ((int)$controlNumber === (int)substr($iban, 2, 2)); } var_dump(isIBAN('999'));
Output for 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, 5.5.35, 5.6.21 - 5.6.28, 7.0.6 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(false)
Output for 7.0.0 - 7.0.5, 7.3.32 - 7.3.33, 7.4.26, 7.4.33, 8.0.13
Fatal error: Uncaught Error: Call to undefined function bcmod() in /in/cAPqU:19 Stack trace: #0 /in/cAPqU(23): isIBAN('999') #1 {main} thrown in /in/cAPqU on line 19
Process exited with code 255.
Output for 5.5.0 - 5.5.34, 5.6.0 - 5.6.20
Fatal error: Call to undefined function bcmod() in /in/cAPqU on line 19
Process exited with code 255.
Output for 4.4.5 - 4.4.9
<br /> <b>Fatal error</b>: Call to undefined function: str_split() in <b>/in/cAPqU</b> on line <b>14</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
<br /> <b>Fatal error</b>: Call to undefined function: str_split() in <b>/in/cAPqU</b> on line <b>14</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1
<br /> <b>Fatal error</b>: Call to undefined function: str_split() in <b>/in/cAPqU</b> on line <b>14</b><br />
preferences:
257.06 ms | 401 KiB | 375 Q