Services
Technology Web App Development Mobile App Development Windows App Development Database Development UI/UX Development Cloud Development SEO Digital Marketing Guest Posting Content Writing Artificial Intelligence Data Science ERP Development CRM Development CMS Development LMS Development Business Listing Blockchain Technology Startup Promotion
Products
Data Converter Cleaner TUC - Unit Converter Import Export Survey Manager Tweet Controller
Developer
Article Blog Forum Interview Beginner News Startup Quiz
Users
Career
Apply Job Internship
Pricing
Login Sign Up Get a Quote

forum

home / developersection / forums / global variables - superglobals
Ask Question

Global Variables - Superglobals

Anonymous User 1778 19 Jul 2018

why Global Variables are Superglobals in php explain with a example ?

php web developmentphp
Updated 19 Jul 2018
Anonymous User
Anonymous User

Other

I am a content writter !

Message

1 Answers

Prakash nidhi Verma
Prakash nidhi Verma 19 Jul 2018
Report Abuse

PHP Global Variables - Superglobals :

it's a predefined variables in PHP which are always accessible of scope and you can access them from any function and class.  The PHP superglobal variables are: 

$GLOBALS 
$_SERVER

$_REQUEST

$_POST

$_GET

$_FILES

$_ENV

$_COOKIE

$_SESSION

PHP $GLOBALS:

$GLOBALS[index] in PHP it means which is stores all global variables in array. The index holds the name of the variable. 

<?php 
$x =10; 
$y =20;
function addition() { 
    $GLOBALS['z'] = $GLOBALS['x'] + $GLOBALS['y']; 
}
addition(); 
echo $z; 
?>

PHP $_SERVER :

it is holds information about headers, paths and script locations in PHP super global variable. 

<?php 
echo $_SERVER['PHP_SELF'];
echo "<br>";
echo $_SERVER['SERVER_NAME'];
echo "<br>";
echo $_SERVER['HTTP_HOST'];
echo "<br>";
echo $_SERVER['HTTP_REFERER'];
echo "<br>";
echo $_SERVER['HTTP_USER_AGENT'];
echo "<br>";
echo $_SERVER['SCRIPT_NAME'];
?>
MindStick Training