Can not access global variable outside function

Question

I've got two isset function

function getPlayers(){
if (isset($_POST['select'])) 
{
    global $t1select;
    global $t2select;

The code above is part of the first function, notice the two global variables I declared, I did this because I would like to use them in my second functions:

function PlayerAttributes(){
if (isset($_POST['teamselect'])) {

The function above is my second function.

The Problem

When I try to refer to the global variables in the second function, I get the error message "Undefined variable: t1select "

What am I doing wrong?

stackoverflow.com/questions/13530465/…

Ed Capetti
– Ed Capetti

2014-02-09 04:01:52 +00:00
Commented Feb 9, 2014 at 4:01 — Ed Capetti
– Ed Capetti, Commented Feb 9, 2014 at 4:01

Collin Grady · Accepted Answer · 2014-02-09 03:57:52Z

1

You have to put global $var in every function you wish to use them in, not just one.

answered Feb 9, 2014 at 3:57

Collin Grady

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Comments

bbonev · Accepted Answer · 2014-02-09 03:58:07Z

1

Varibles should be declared as global in every function that is going to use them. Otherwise they will be only for the local scope of the function.

Another approach is to use the $GLOBALS['varname'] syntax. This will work without any declarations.

answered Feb 9, 2014 at 3:58

bbonev

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2 Comments

Marilee Over a year ago

Hi thank you for your answer. The error is not showing up anymore, but nothing gets displayed. When I do a var_dump on the variable it returns null, however when I do a var_dump on the variable without declaring it as a global I get the correct contents, any idea what going on here?

bbonev Over a year ago

I notice you declare the global variables after some if statement - in this case the variable will not be global in statements before the declaration.

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