Heim >Backend-Entwicklung >PHP-Tutorial >php生成一个可选位数的随机码_PHP教程
<?php echo coding(6); function coding($num){ $str_arr = 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'); $rand_s = array_rand($str_arr,$num); $code_s = ''; if(is_array($rand_s)){ foreach($rand_s as $v){ $code_s .= $str_arr[$v]; } return $code_s; }else{ return $str_arr['rand_s']; } } ?>