Last active
May 12, 2022 08:53
-
-
Save alphp/3f1443f4badae220f53c102e61ebdfee to your computer and use it in GitHub Desktop.
Spanish CIF validation (PHP)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<?php | |
function cif_validation ($cif) { | |
$cif = strtoupper($cif); | |
if (preg_match('~(^[XYZ\d]\d{7})([TRWAGMYFPDXBNJZSQVHLCKE]$)~', $cif, $parts)) { | |
$control = 'TRWAGMYFPDXBNJZSQVHLCKE'; | |
$nie = array('X', 'Y', 'Z'); | |
$parts[1] = str_replace(array_values($nie), array_keys($nie), $parts[1]); | |
$cheksum = substr($control, $parts[1] % 23, 1); | |
return ($parts[2] == $cheksum); | |
} elseif (preg_match('~(^[ABCDEFGHIJKLMUV])(\d{7})(\d$)~', $cif, $parts)) { | |
$checksum = 0; | |
foreach (str_split($parts[2]) as $pos => $val) { | |
$checksum += array_sum(str_split($val * (2 - ($pos % 2)))); | |
} | |
$checksum = ((10 - ($checksum % 10)) % 10); | |
return ($parts[3] == $checksum); | |
} elseif (preg_match('~(^[KLMNPQRSW])(\d{7})([JABCDEFGHI]$)~', $cif, $parts)) { | |
$control = 'JABCDEFGHI'; | |
$checksum = 0; | |
foreach (str_split($parts[2]) as $pos => $val) { | |
$checksum += array_sum(str_split($val * (2 - ($pos % 2)))); | |
} | |
$checksum = substr($control, ((10 - ($checksum % 10)) % 10), 1); | |
return ($parts[3] == $checksum); | |
} | |
return false; | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment