Php global keyword replacing previous variable value with empty inside function

Question

I have to return some data by calling function, but global variable values we can't access inside function so I used global keyword,however after using global keyword it is making that variable empty,but I have to check condition by using that variable, so how to prevent variable values which is get replaced by global keyword,

    $url = $_SERVER['REQUEST_URI'];
    $url = explode('/', $url);
    $url = end(url);
    $param='some_value';

    active(); // call active unction

    function active() 
    {
        global $url, $param;
      // after using global keyword  $url,$param values replaced with empty by global keyword     
    }

Rather than using `global`, pass in the values you need to do the processing and `return` the result. — Nigel Ren, Nov 11 '19 at 07:25
sorry didn't get can you please explain by writing some code — Anonymous, Nov 11 '19 at 07:26
Have a read of https://stackoverflow.com/questions/5166087/php-global-in-functions/5166255. — Nigel Ren, Nov 11 '19 at 07:29
Judging by your indentation, perhaps `$url` and `$param` are defined within another function? in which case you need `global $url, $param;` in that function too. — Nick, Nov 11 '19 at 07:37

score 0 · Answer 1 · answered Nov 11 '19 at 07:35

0

try to use $GLOBALS['url'] ,$GLOBALS['param'], your function returning empty because $url and $param are not declared inside the function, initially $url and $param are not global variable

answered Nov 11 '19 at 07:35

idirsun

474
6
8

global keyword is working hahaha, i think just put global on $url and $param outside the function – idirsun Nov 11 '19 at 07:37
still getting empty, same issue – Anonymous Nov 11 '19 at 07:38
@Anonymous I have checked your code. It is working fine now. – Amit Senjaliya Nov 11 '19 at 07:42

score 0 · Answer 2 · answered Nov 11 '19 at 07:44

0

<?php

    $url = $_SERVER['REQUEST_URI'];
    $url = explode('/', $url);
    $url = end($url); // You miss `$` sign here.

    $param='some_value';

    active(); // call active unction

   function active() {
        global $url, $param;
        echo $url;
        echo $param;            
   }

?>

answered Nov 11 '19 at 07:44

Amit Senjaliya

2,867
1
10
24

@Anonymous Your issue is you have not to get `$url, $param` value. Always return an empty value. – Amit Senjaliya Nov 11 '19 at 07:52
I want to access global values inside function and based on that compare them if they are equal then return 'active' – Anonymous Nov 11 '19 at 07:57

Php global keyword replacing previous variable value with empty inside function

2 Answers2