<?php
# PHP IBAN - http://code.google.com/p/php-iban - LGPLv3
# Global flag by request
$__disable_iiban_gmp_extension=false;
# Verify an IBAN number. Returns true or false.
# NOTE: Input can be printed 'IIBAN xx xx xx...' or 'IBAN xx xx xx...' or machine 'xxxxx' format.
function verify_iban($iban) {
# First convert to machine format.
$iban = iban_to_machine_format($iban);
# Get country of IBAN
$country = iban_get_country_part($iban);
# Test length of IBAN
if(strlen($iban)!=iban_country_get_iban_length($country)) { return false; }
# Get checksum of IBAN
$checksum = iban_get_checksum_part($iban);
# Get country-specific IBAN format regex
$regex = '/'.iban_country_get_iban_format_regex($country).'/';
# Check regex
if(preg_match($regex,$iban)) {
# Regex passed, check checksum
if(!iban_verify_checksum($iban)) {
return false;
}
}
else {
return false;
}
# Otherwise it 'could' exist
return true;
}
# Convert an IBAN to machine format. To do this, we
# remove IBAN from the start, if present, and remove
# non basic roman letter / digit characters
function iban_to_machine_format($iban) {
# Uppercase and trim spaces from left
$iban = ltrim(strtoupper($iban));
# Remove IIBAN or IBAN from start of string, if present
$iban = preg_replace('/^I?IBAN/','',$iban);
# Remove all non basic roman letter / digit characters
$iban = preg_replace('/[^a-zA-Z0-9]/','',$iban);
