Why can't my include function get the global variable value?

Question

I have a func.inc file as below

// STATUS_VALLUE
$status_failure = 0;
$status_success = 1;

function resultResultJson($status) {
    echo $status;
    echo $status_success;
}

And my function.php as below

<?php 
    include("./includes/func.inc");
    resultResultJson($status_success);
?>

I'm expected result 11. But I got 10. Why is the function resultResultJson not getting the right $status_success result?

Updated

The https://stackoverflow.com/a/16959577/3286489 provides explanation on the variable scope, which explains why, but doesn't give a resolution. The below answer by @Niyoko Yuliawan helps.

And then there is [SCOPE, Scope, scope](http://php.net/manual/en/language.variables.scope.php) `$status_success;` is not visible inside the function — RiggsFolly, Nov 12 '16 at 05:22
The pointed duplicate reference does explain about scope, but doesn't give the resolution to how to solve this. The below answer helps indeed. — Elye, Nov 12 '16 at 06:28
Thanks @RiggsFolly, the references to http://php.net/manual/en/language.variables.scope.php helps. As a C and Java developer, this is puzzling that something declared globally are not taken into consideration in an inner function. Hence I ask this question puzzled. — Elye, Nov 12 '16 at 06:37

score 1 · Accepted Answer · answered Nov 12 '16 at 05:23

1

You need to declare $status_success variable as global variable.

function x($status){
    global $status_success;
    echo $status;
    echo $status_success;
}

answered Nov 12 '16 at 05:23

Niyoko

7,512
4
32
59

Cool. That helps much! I upvote your answer and tick it, as it helps. I think my question is valid, as I can't really find a solution else where. Even the marked duplicate answer didn't tell me to put global. If you agree with me, perhaps you could help upvote my question back, as I don't think it deserved a negative vote. Thanks! – Elye Nov 12 '16 at 06:27
@Elye I upvoted your question, but it won't negate -2 downvotes as I can only upvote once. – Niyoko Nov 12 '16 at 14:30
Thanks @Niyoko Yuliawan. That's good enough. I think stackoverflow should enforce whoever down vote, should at least put a comment of reason why they down vote. – Elye Nov 13 '16 at 06:18

score 0 · Answer 2 · answered Nov 12 '16 at 05:21

0

Turn the file name func.inc into func.inc.php so that PHP can parse that code. Also, don't forget to add <?php tags at the start to claiming that PHP script is going to start.

answered Nov 12 '16 at 05:21

Benyi

912
2
9
24

Thanks. Unfortunately this is not the case. – Elye Nov 12 '16 at 06:31

Why can't my include function get the global variable value?

2 Answers2