php生成短域名函数
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 < $count; $i++) {$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。