Question

Possible Duplicate:
Using global vars within a function in PHP the way you do it in Javascript

For some reason, the following program is giving me an error:

<?php
    $a = 1;

    function func() {
        echo $a;
    }

    func();
?>

That is the entire program. The error is:

Notice: Undefined variable: a in what.php on line 5

Am I misunderstanding something fundamental?

Answer 1

Due to variable scope $a is not available inside of the function. You need to pass it as an argument for func() to have access to it:

<?php
    $a = 1;

    function func($a) {
        echo $a;
    }

    func($a);
?>