Handy Dandy Function Dump

This thread is for dumping small, useful helper functions that I make for various things.

First, here's a quickie using regular expressions to convert image tags to their plain text alt tags.

function img2Alt($x){
  return preg_replace('/<img(.*)alt="(.*)"(.*)\>/', "$2", $x);
}

Here's one to generate random strings:

function generateRandomString($len){
  $o = '';
  $ascii_codes = array_values(array_merge(range(48,57),range(65,90),range(97,122)));
  $c = count($ascii_codes);
  for($i=0;$i

Here's another one that generates random (mostly) pronounceable words. You'll recognize that the testing / bot accounts have names generated by this function:

function generateRandomWord($len){
  $o = '';
  $consonants = 'bcdfghjklmnpqrstvwxyz';
  $vowels = 'aeiou';
  $cl = strlen($consonants) - 1;
  $vl = strlen($vowels) - 1;
  $v = true;
  for($i=0;$i

Now, you can use this to generate random e-mail addresses en masse and fill a page with them to cheese off spammers who collect addresses (think Spampoison):

function generateRandomEmailAddress(){
  $tlds = Array('com','org','biz','gov','co.uk','de');
  $tldc = count($tlds);
  $tld = $tlds[mt_rand(0,$tldc-1)];
  return generateRandomWord(mt_rand(3,7)).'@'.generateRandomWord(mt_rand(3,7)).'.'.$tld;
}