Random Password Generator

random_password.php

function generatePassword($length=6,$level=2){
	list($usec, $sec) = explode(' ', microtime());
	srand((float) $sec + ((float) $usec * 100000));

	$validchars[1] = "0123456789abcdfghjkmnpqrstvwxyz";
	$validchars[2] = "0123456789abcdfghjkmnpqrstvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
	$validchars[3] = "0123456789_!@#$%&*()-=+/abcdfghjkmnpqrstvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_!@#$%&*()-=+/";

	$password  = "";
	$counter   = 0;
	while ($counter < $length) {
	$actChar = substr($validchars[$level], rand(0, strlen($validchars[$level])-1), 1);
	// All character must be different
	if (!strstr($password, $actChar)) {
		$password .= $actChar;
		$counter++;
		}
	}
	return $password;
}

/**
* Source: http://www.webtoolkit.info/php-random-password-generator.html
*/
function generatePassword($length=9, $strength=0) {
	$vowels = 'aeuy';
	$consonants = 'bdghjmnpqrstvz';
	if ($strength & 1) {
		$consonants .= 'BDGHJLMNPQRSTVWXZ';
	}
	if ($strength & 2) {
		$vowels .= "AEUY";
	}
	if ($strength & 4) {
		$consonants .= '23456789';
	}
	if ($strength & 8) {
		$consonants .= '@#$%';
	}
 
	$password = '';
	$alt = time() % 2;
	for ($i = 0; $i < $length; $i++) {
		if ($alt == 1) {
			$password .= $consonants[(rand() % strlen($consonants))];
			$alt = 0;
		} else {
			$password .= $vowels[(rand() % strlen($vowels))];
			$alt = 1;
		}
	}
	return $password;
}