In this article, we will discuss $GLOBALS in PHP. $GLOBALS is a superglobal variable used to access global variables from anywhere in the PHP program. PHP stores all global variables in an array called $GLOBALS[index].
Syntax:
$GLOBALS['index']=value;
- value is the input value.
- The index is the unique key for a particular value.
Example: PHP Program to demonstrates $GLOBALS.
PHP
<?php // Initialize an index A // and set to 100 $GLOBALS['A'] = 100; // Display echo $A; echo "<br>"; // Initialize an index A // and set to a string $GLOBALS['B'] = "This is Global"; echo "\n"; echo $B; ?> |
Output:
100 This is Global
Example 2: PHP program to perform arithmetic operations using $GLOBALS.
PHP
<?php // Initialize an A index and set to 100 $GLOBALS['A'] = 100; // Initialize an B index and set to 200 $GLOBALS['B'] = 200; // Display addition echo $GLOBALS['A']+$GLOBALS['B']; echo "<br>"; // Display subtraction echo $GLOBALS['A']-$GLOBALS['B']; echo "<br>"; // Display multiplication echo $GLOBALS['A']*$GLOBALS['B']; echo "<br>"; // Display division echo $GLOBALS['B']/$GLOBALS['A']; echo "\n"; ?> |
Output:
300 -100 20000 2
