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php?生成随机数解决方案

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Release： 2016-06-13 12:25:17
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php?生成随机数
如何生成1~9,a~z,A~Z之间XXX位随机数
------解决思路----------------------
/**
 * 生成随机数
 * @param int $length 長度
 * @return string
 */
function randomkey($length) {
    $hash = '';
    $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';
    $max = strlen($chars) - 1;
    for ($i = 0; $i         $hash .= $chars[mt_rand(0, $max)];
    }
    return $hash;
}

Related labels：
hash length nbsp return
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