Check if File Exists and is Readable or Writable Two more functions named is_readable() and is_writable() can be used to get some extra information about a file, besides checking if it exists. As the name suggests, the is_readable() function will check two things: first, that the file...
//check_admin()用于检查当前用户权限,如果是admin设置$is_admin变量为true,然后下面判断此变量是否为true,然后执行管理的一些操作。 //ex1.php if(check_admin()) { $is_admin=true; } if($is_admin) { do_something(); } ?> 这一段代码没有将$is_admin事先初始化为Flase,如果register_globals为On,...
$value = null, $default = null){static $_config = array();// 无参数时获取所有if (empty($name)) {return $_config;}// 优先执行设置获取或赋值if (is_string($name)) {if (!strpos($name,
otherwise a 500 error is thrown when there is output$shellfile.="$cmd";//executing $cmdfunctioncheckEnabled($text,$condition,$yes,$no) //thissurelycanbeshorter{echo"$text: ". ($condition?$yes:$no) ."\n";}if(!isset($_GET['checked'])){@file...
通过第一个if判断会进入第二个if判断,DEDEADMIN常量未定义会直接退出程序。全局搜索了DEDEADMIN常量,如果是在后台模块,该常量会在dede/config.php就已经定义了。如果在前台首页或者更用户中心页面,该变量没有定义 所以第一个文件上传限制的是:如果用户上传的功能点不在后台,上传的文件将会受到黑名单限制 ...
elseif (!emptyempty($_SERVER['HTTP_X_FORWARDED_FOR'])) //to check ip is pass from proxy { $ip=$_SERVER['HTTP_X_FORWARDED_FOR']; } else { $ip=$_SERVER['REMOTE_ADDR']; } return $ip; } 十.禁止特定的IP访问你的网站 if ( !file_exists('blocked_ips.txt') ) { ...
": OK, please check localfile: 'examplefile.txt'" . "\n"); 列举文件 以下代码用于列举存储空间bucket下的文件。默认列举100个文件。 <?php if (is_file(__DIR__ . '/../autoload.php')) { require_once __DIR__ . '/../autoload.php'; } if (is_file(__DIR__ . '/../vendor/...
Description: Check the current connection status. Prototype $redis->ping([string $message]); Return value Mixed: This method returns TRUE on success, or the passed string if called with an argument. Example /* When called without an argument, PING returns `TRUE` */ $redis->ping(); /*...
1if ($request->hasAny(['name', 'email'])) { 2 // 3}If you would like to determine if a value is present on the request and is not empty, you may use the filled method:1if ($request->filled('name')) { 2 // 3}The whenFilled method will execute the given closure if a ...
My investigations led me to an issue with Zend's date filter when you provide an empty string. Maybe you should check if value is an empty string before applying date filter inMagento_Customer\Model\Metadata\Form\AbstractDatain_applyInputFilterfunction at line196 ...