// // // // // // //

// 文件名： //
// //

// // // //EOF; //var_dump(array_search(new Answer(1, 2, 3, 4), array(new Answer(4, 5, 6, 7), new Answer(2, 2, 3, 4)))); //$s1 = "dotcoo world!"; //$s2 = "dotcoo"; //$s3 = "hello dotcoo"; //var_dump(substr($s1, -strlen($s2)) === $s2); /* * 生成随机字符串 * @param int $length 生成随机字符串的长度 * @param string $char 组成随机字符串的字符串 * @return string $string 生成的随机字符串 */ function str_rand($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; } var_dump(str_rand(5));