Accessing variable inside function - php

Question

i need to access a variable which is declared in another php file within a function.. How can i do it?

a.php

<?php

$global['words']=array("one","two","three");

echo "welcome"
?>

b.php

<?php

$words = $global['words'];
require_once('a.php');

print_r($global['words']);

function fun()
{

print_r($global['words']); // not displaying here

}

fun();
?>

now i am able to access the "$global['words']" variable in b.php file, but not within function, how can i make it visible inside the function?

Have a look at [this](http://stackoverflow.com/questions/14913718/global-variables-in-a-loaded-page/14913814#14913814) — Vedant Terkar, Sep 12 '13 at 16:25

score 1 · Accepted Answer · edited May 23 '17 at 12:22

1

The preferred option is to pass as a parameter:

function fun($local) {
    print_r($local['words']);
}

fun($global);

If for some reason you can't use that approach, then you can declare the variable as global:

function fun() {
    global $global;
    print_r($global['words']);
}

fun();

Or use the $GLOBALS array:

function fun() {
    print_r($GLOBALS['global']['words']);
}

fun();

But in general, using global variables is considered bad practise.

edited May 23 '17 at 12:22

Community

1
1

answered Sep 12 '13 at 16:21

cmbuckley

40,217
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How is this different than my answer? – letiagoalves Sep 12 '13 at 16:22
Because I've recommended using a parameter, which is the correct way to do it (whether the OP asked for it or not). – cmbuckley Sep 12 '13 at 16:24
still, how is it different? – letiagoalves Sep 12 '13 at 16:26

score 0 · Answer 2 · edited Sep 12 '13 at 17:02

0

actually your function does n't know about anything outside it, if it's not a classes, or global php vars such as $_POST , you can try to define function as:

function fun() use ($globals)
{

}

edited Sep 12 '13 at 17:02

fthiella

48,073
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answered Sep 12 '13 at 16:32

karaken

94
3

1

The `use` keyword is only available on anonymous functions. – cmbuckley Sep 12 '13 at 17:09
thanks i forgot about it ( – karaken Sep 13 '13 at 08:32

Accessing variable inside function - php

2 Answers2