可阅读随机字符串与随机字符串

1、将创建一个可阅读的字符串，使其更接近词典中的单词，实用且具有密码验证功能。

/**  
* @param length - length of random string (must be a multiple of 2)  
* @参数length-随机字符串的长度（必须是2的倍数）
*/ 
function readable_random_string($length = 6){
	$conso = array("b","c","d","f","g","h","j","k","l","m","n","p","q","r","s","t","v","w","x","y","z");
	$vocal = array("a","e","i","o","u");
	$password = "";
	srand ((double)microtime()*1000000);	//srand()-播下随机数发生器种子,microtime — 返回当前 Unix 时间戳和微秒数
	$max = $length / 2;
	for($i = 0; $i < $max; $i++){
		$password .= $conso[rand(0,20)];
		$password .= $vocal[rand(0,5)];
	}
	return $password;
}

print_r(readable_random_string());
//输出示例为：xaciti

2、创建一个随机字符串，作为用户的随机密码

/**  
*@param $length - length of random string  
*@length-随机字符串的长度
*/ 

function generate_random_string($length){
	$c = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
	$rand = "";
	srand((double)microtime()*1000000);
	for($i = 0; $i < $length; $i++){
		$rand .= $c[rand()%strlen($c)];
	}
	return $rand;
}

print_r(generate_random_string(6));
//输出示例为：QNXM5w