一份PHP的面试题_PHP教程

echo $_SERVER['PHP_SELF']; echo $_SERVER["HTTP_REFERER"];

0

(4)未授权 (5) header("HTTP/1.0 404 Not Found");

(6)对数组进行逆向排序并保持索引关系 (7)All errors and warnings

/].*?>.*?/si

(10) LoadModule php5_module "D:/xampp/apache/bin/php5apache2.dll" (11) AddType application/x-httpd-php-source .phps AddType application/x-httpd-php .php .php5 .php4 .php3 .phtml

(12) 发生异常时include产生警告require产生致命错误 (13) require_once()/include_once()

serialize() /unserialize()

allow_call_time_pass_reference

(16) 自然左外连接 (17) select name , count(score) as sum_score from tbl_user left join tbl_score on tbl_user.ID=tbl_score.ID group by tbl_user.ID

结束标识符所在的行不能包含任何其它字符除";"

/**
* 遍历目录，结果存入数组。支持php4及以上。php5以后可用scandir()函数代替while循环。
* @param string $dir
* @return array
*/
my_scandir($dir)
{
    $files = array();
    if ( $handle = opendir($dir) )
    {
        while ( ($file = readdir($handle)) !== false )
        {
            if ( $file != ".." && $file != "." )
            {
                if ( is_dir($dir . "/" . $file) )
                {
                    $files[$file] = rec_scandir($dir . "/" . $file);
                }
                else
                {
                    $files[] = $file;
                }
            }
        }
        closedir($handle);
        return $files;
    }
}