If you do write this, please don't call it a password generator, else people might use these things for passwords. :-)
Excellent point. This is for creating one-time invitation codes for users to participate in surveys and not for actual passwords.
Thanks to a link posted by someone else, I was able to find a list of nearly 113,000 words between 4 and 12 characters long that can be used. Even though that's a lot of words, as Chris points out above, it would be trivial to write a script to try every combination of the words...
For those interested, here's the simple function to grab a number of words from a text file containing each word on it's own line:
define('WORDCODE_NUMWORDS',2);
define('WORDCODE_SEPERATOR','-');
function _getWordCode()
{
$retval = '';
$chosenwords = array(); $file = 'words.txt';
$fp = fopen($file,'r');
$fsize = filesize($file); for($x=0;$x<WORDCODE_NUMWORDS;$x++)
{
$pos = mt_rand(0,$fsize);
fseek($fp,$pos);
while(fgetc($fp) != "\n")
{ fseek($fp,--$pos); }
$chosenwords[] = trim(fgets($fp));
} return implode(WORDCODE_SEPERATOR,$chosenwords);
}Anyone thinking of suggesting file() and array_rand() should try it themselves before doing so. ;)
--
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