Generate a unique key

gistfile1.php

<?php
$consumer_key	= $this->generateKey(true);
$consumer_secret= $this->generateKey();

	public function generateKey ( $unique = false )
	{
		$key = md5(uniqid(rand(), true));
		if ($unique)
		{
			list($usec,$sec) = explode(' ',microtime());
			$key .= dechex($usec).dechex($sec);
		}
		return $key;
	}