Random String

Just some functions for generating random strings in PHP.

function randstr($len=8, $chars='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789') {
	$i = 0;
	$str = '';
	$randmax = strlen($chars)-1;

	for($i=0; $i<$len; ++$i) {
		$str .= $chars[mt_rand(0,$randmax)];
	}

	return $str;
}

function randkey($len=32) {
	return randstr($len, '`1234567890-=qwertyuiop[]\\asdfghjkl;\'zxcvbnm,./ ~!@#$%^&*()_+{}|:"<>?');
}

randkey is good for generating salt strings and such, randstr is good for stuff like short URLs. Of course, you can pass in whatever characters you want.