Please can some have a look at this code for me,thanks

hi

I need to accept uk post codes but this script i'm using only does us zip code is there any way i can change this?

function validateZIP(field) {
var valid = "0123456789-";
var hyphencount = 0;

if (field.length!=5 && field.length!=10) {
//alert("Please enter your 5 digit or 5 digit+4 zip code.");
return true;
}
for (var i=0; i < field.length; i++) {
temp = "" + field.substring(i, i+1);
if (temp == "-") hyphencount++;
if (valid.indexOf(temp) == "-1") {
//alert("Invalid characters in your zip code.  Please try again.");
return true;
}
if ((hyphencount > 1) || ((field.length==10) && ""+field.charAt(5)!="-")) {
//alert("The hyphen character should be used with a properly formatted 5 digit+four zip code, like '12345-6789'.   Please try again.");
return true;
   }

PHP:

any help please,this has been doing my head in

thanks

 

Hy,
How the uk post code format looks like?

 

You can use following code:

function isUKUSPostCode(src) {
  if (validateZIP(src) == true) return true;
  return isUKPostCode(src); 
}
  
function isUKPostCode(src) { 
  if (src.length == 6 && isLetter(src[0]) && isDigit(src[1]) && src[2] == ' ' && isDigit(src[3]) && isLetter(src[4]) && isLetter(src[5])) return true; 
  if (src.length == 7 && ((isLetter(src[0]) && isDigit(src[1]) && isDigit(src[2])) || (isLetter(src[0]) && isLetter(src[1]) && isDigit(src[2])) || (isLetter(src[0]) && isDigit(src[1]) && isLetter(src[2]))) && src[3] == ' ' && isDigit(src[4]) && isLetter(src[5]) && isLetter(src[6])) return true; 
  if (src.length == 8 && isLetter(src[0]) && isLetter(src[1]) && isDigit(src[2]) && (isDigit(src[3]) || isLetter(src[3])) && src[4] == ' ' && isDigit(src[5]) && isLetter(src[6]) && isLetter(src[7])) return true; 
  return false; 
} 

function isDigit(src) { 
  return '0123456789'.indexOf(src) >= 0; 
} 

function isLetter(src) { 
  return 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.indexOf(src) >= 0; 
} 

Code (markup):