// This will not work, and will result in a parse error, such as:// Parse error: parse error, expecting T_STRING' or T_VARIABLE' or T_NUM_STRING'// This of course applies to using superglobals in strings as wellprint "Hello $arr['fruit']";print "Hello $_GET['foo']";// ...
因此通常被称为自动全局变量(autoglobals)或者超全局变量(superglobals)。(PHP 中没有用户自定义超全局变量的机制。)超全局变量罗列于下文中;而且,你也将注意到旧的预定义数组($HTTP_*_VARS)仍旧存在。自 PHP 5.0.0 起,长格式的 PHP 预定义变量可以通过设置register_long_arrays来屏蔽。 下表是PHP的超全局变量...
This section contains Aptitude Questions and Answers on PHP Arrays.1) There are the following statements that are given below, which of them are correct about Arrays in PHP? An array is used to store multiple data elements in a single variable. In PHP, we can create an array of strings....
The PHP language has many built-in variables, called superglobals, that provide a convenient way to access data from various sources in your scripts. One of the
PHP Constructors & Destructors Aptitude: This section contains aptitude questions and answers on PHP Constructors & Destructors.
$GLOBALS— 引用全局作用域中可用的全部变量 $_SERVER— 服务器和执行环境信息 $_GET— HTTP GET 变量 $_POST— HTTP POST 变量 $_FILES— HTTP 文件上传变量 $_REQUEST— HTTP Request 变量 $_SESSION— Session 变量 $_ENV— 环境变量 $_COOKIE— HTTP Cookies $php_errormsg— 前一个错误信息 $HTTP_RA...
Sorting Arrays explained PHP Superglobals $GLOBAL - Used to access global variables from anywhere in the PHP script$_SERVER - Holds information about headers, paths, and script locations$_REQUEST - Used to collect data after submitting an HTML form$_POST - Used to collect form data after submi...
Using the superglobals might not be an obvious flaw, but if you call your code from a Command Line, you don't have $_GET or $_POST. If your code relies on input from these, you are limiting yourself to a web environment. Just abstract the request into an object and use that instea...
Next up on this core PHP interview questions and answers blog, let us take a look at the intermediate questions. 61. What are the types of arrays supported by PHP? There are three main types ofarraysthat are used in PHP. Indexed arrays: These are arrays that contain numerical data. Data...
; This directive determines which super global arrays are registered when PHP ; starts up. G,P,C,E & S are abbreviations for the following respective super ; globals: GET, POST, COOKIE, ENV and SERVER. There is a performance penalty ; paid for the registration of these arrays and because...