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php 生成随机函数

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2016-06-08 17:28:40982browse
<script>ec(2);</script>

php 生成随机函数

function genRandomString($len)
{
        $chars = 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", "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", "0", "1", "2",
        "3", "4", "5", "6", "7", "8", "9"
        );
        $charsLen = count($chars) - 1;
        shuffle($chars);
        $output = "";
        for ($i=0; $i         {
            $output .= $chars[mt_rand(0, $charsLen)];
        }
        return $output;
}

还有一种是php 自带的mt_rand 与rand 哦,不过建意最好用mt_rand这个事速度上优与rand

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