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This little php class lets you create random characters of a given length.

This little php class lets you create random characters of a given length.
 
<code class=”prettyprint”>
class RandomGenerator
{
    static $letters = array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o',
                 'p','q','r','s','t','u','v','w','x','y','z');
    static $digits = array('1','2','3','4','5','6','7','8','9','0');
 
    public function genKey($length = '128') {
        $key = '';
 
        $maxIndexLeters = count(self::$letters) - 1;
        $maxIndexDigits = count(self::$digits) - 1;
 
        for ($i= 0 ; $i < $length ; $i++) {
            $makeDigit = (boolean) mt_rand(0,1);
            if ($makeDigit) {
                $index = mt_rand(0, $maxIndexDigits);
                $key .= self::$digits[$index];
            } else {
                $index = mt_rand(0, $maxIndexLeters);
                $makeUpperCase = (boolean) mt_rand(0,1);
                if ($makeUpperCase) {
                    $key .= strtoupper(self::$letters[$index]);
                } else {
                    $key .= self::$letters[$index];
                }
            }
        }
        return $key;
    }
}
echo RandomGenerator::genKey();
</code></code>

This entry was posted on Monday, July 23rd, 2007 at 1:13 pm and is filed under php, Snippet-library. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.