php生成短域名函数
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public function createRandCode($string) { $code = ''; $hex_code = '1qaz2wsx3edc4rfv5t-gb6yhn7ujm8ik9ol0p_'; $now = microtime(true) * 10000; $strlen = strlen($hex_code);
$hash_code = hash('sha256', $string);
// 这里会为编码定义一个随机的长度，长度取决于step $step = rand(8, 16); $count = ceil(strlen($hash_code) / $step);
for($i = 0; $i $start = $i * $step; $hex_num = substr($hash_code, $start, $step); $num = 0x3fffffff & (1 * '0x' . $hex_num); $n = $num % $strlen; $code .= $hex_code[$n]; }
return $code; } |
以上所述就是本文给大家分享的代码的全部内容了，希望大家能够喜欢。