PHP生成隨機字符串與唯一字符串
阿新 • • 發佈:2019-01-06
class color || -- ring 生成隨機字符串 true and abcde
代碼如下:
<?php /* * 生成隨機字符串 * @param int $length 生成隨機字符串的長度 * @param string $char 組成隨機字符串的字符串 * @return string $string 生成的隨機字符串 */ function str_rand($length = 32, $char = ‘0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ‘) { if(!is_int($length) || $length < 0) {return false; } $string = ‘‘; for($i = $length; $i > 0; $i--) { $string .= $char[mt_rand(0, strlen($char) - 1)]; } return $string; } echo str_rand(),"<br />"; /* * 生成32位唯一字符串 */ $uniqid = md5(uniqid(microtime(true),true)); echo $uniqid;
PHP生成隨機字符串與唯一字符串