Hi guys i found the following code which i want to use...
Problems:
- the name of my form field is $customer_postcode
what am i changing or where am i putting that to make this code work. When I do an example call like the following
if (checkPostcode($customer_postcode) == false )
{
$postcode_error = 'postcode invalid';
}
I seem to be getting an invalid result all the time...is my call wrong? I am kinda a newbie.
Parameters: $postcode - postcodeto be checked. This is returned reformatted
if valid.
This function checks the value of the parameter for a valid postcode format. The
space between the inward part and the outward part is optional, although is
inserted if not there as it is part of the official postcode.
The functions returns a value of false if the postcode is in an invalid format,
and a value of true if it is in a valid format. If the postcode is valid, the
parameter is loaded up with the postcode in capitals, and a space between the
outward and the inward code to conform to the correct format.
Example call:
if (!checkPostcode($postcode) ) {
echo 'Invalid postcode <br>';
}
------------------------------------------------------------------------------*/
function checkPostcode (&$toCheck) {
// Permitted letters depend upon their position in the postcode.
$alpha1 = "[abcdefghijklmnoprstuwyz]"; // Character 1
$alpha2 = "[abcdefghklmnopqrstuvwxy]"; // Character 2
$alpha3 = "[abcdefghjkstuw]"; // Character 3
$alpha4 = "[abehmnprvwxy]"; // Character 4
$alpha5 = "[abdefghjlnpqrstuwxyz]"; // Character 5
// Expression for postcodes: AN NAA, ANN NAA, AAN NAA, and AANN NAA
$pcexp[0] = '^('.$alpha1.'{1}'.$alpha2.'{0,1}[0-9]{1,2})([0-9]{1}'.$alpha5.'{2})$';
// Expression for postcodes: ANA NAA
$pcexp[1] = '^('.$alpha1.'{1}[0-9]{1}'.$alpha3.'{1})([0-9]{1}'.$alpha5.'{2})$';
// Expression for postcodes: AANA NAA
$pcexp[2] = '^('.$alpha1.'{1}'.$alpha2.'[0-9]{1}'.$alpha4.')([0-9]{1}'.$alpha5.'{2})$';
// Exception for the special postcode GIR 0AA
$pcexp[3] = '^(gir)(0aa)$';
// Standard BFPO numbers
$pcexp[4] = '^(bfpo)([0-9]{1,4})$';
// c/o BFPO numbers
$pcexp[5] = '^(bfpo)(c\/o[0-9]{1,3})$';
// Load up the string to check, converting into lowercase and removing spaces
$postcode = strtolower($toCheck);
$postcode = str_replace (' ', '', $postcode);
// Assume we are not going to find a valid postcode
$valid = false;
// Check the string against the six types of postcodes
foreach ($pcexp as $regexp) {
if (ereg($regexp,$postcode, $matches)) {
// Load new postcode back into the form element
$toCheck = strtoupper ($matches[1] . ' ' . $matches [2]);
// Take account of the special BFPO c/o format
$toCheck = ereg_replace ('C\/O', 'c/o ', $toCheck);
// Remember that we have found that the code is valid and break from loop
$valid = true;
break;
}
}
// Return with the reformatted valid postcode in uppercase if the postcode was
// valid
if ($valid){return true;} else {return false;};
}
?>
