WordPress Global Variables Tutorial for beginners from scratch (Part#1) | PHP Globals Introduction




In this video session we have discussed about

Introduction about Global Variables – PHP
==========================================

Several predefined variables in PHP are “superglobals”, which means that they are
always accessible, regardless of scope – and you can access them from any function,
class or file without having to do anything special.

Scope can be defined as the range of availability a variable has to the program in
which it is declared. PHP variables can be one of four scope types:
1. Local variables
2. Global variables
3. Static variables
4. Function parameters

Reference PDF Link:

The PHP superglobal variables are:
====================
$GLOBALS
$_SERVER
$_REQUEST
$_POST
$_GET
$_FILES
$_ENV
$_COOKIE
$_SESSION

PHP $GLOBALS
===================

$GLOBALS is a PHP super global variable which is used to access global variables
from anywhere in the PHP script (also from within functions or methods).

PHP stores all global variables in an array called $GLOBALS[index]. The index holds
the name of the variable.

$fname = “Online “;
$lname = “Web Tutor”;

function fullname(){
$GLOBALS[‘fullname’] = $GLOBALS[‘fname’] . $GLOBALS[‘lname’];
}

fullname();

echo $fullname;

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Online Web Tutor
Keep learning and Sharing 🙂


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Wordpress Global Variables Tutorial for beginners from scratch (Part#1) | PHP Globals Introduction

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