Posted on: October 10, 2009 at 12:00 AM
PHP Global Variable
To access global variable in PHP we need to use global keyword or $GLOBALS associative array
global is a keyword which helps us to access the globally declared variable. There is no limit to use global keyword within a program.
$GLOBALS is an associative array containing references to all global variables, the variable names are the keys of the array.
Code for PHP Global Variable:
<?php $a=1; function globe()
{ $a="12";
echo "Value of a is:".$a;
echo "<br />";
global $a;//global keyword helps us to access globally declared variables echo "Value of a is :".$a;
echo "<br> Other way to access global variable";
echo " <Br>Value of a is :".$GLOBALS["a"];//using $GLOBALS associative array. } globe(); ?>
Output:
Value of a is:12
Value of a is :1
Other way to access global variable
Value of a is :1
