What all the global variables in PHP?

Hi Basavaraj,

I'll give u an example related to global variable...

<?php
$a = 1;
$b = 2;

function Sum()
{
global $a, $b;

$b = $a + $b;
}

Sum();
echo $b;
?>


The above script will output 3. By declaring $a and $b global within the function, all references to either variable will refer to the global version. There is no limit to the number of global variables that can be manipulated by a function.

I think the example will resole your query.....

Thanks,
Riju.