array values assign inside function but shows empty outside

Question

I'm working on magento site and facing strange error when array values assign inside function and retrieve outside of function.

//define array
$ctall=array();
//function for array value assign
function printtest($fg){
//global variable
    global $ctall;

    //just assign to array
    $ctall[rand(10000,100000)]=$fg; 

 //this var dump shows array with vaues  when function calling
//  var_dump($ctall);
}

i call the function here inside an another function

$categoryTree = Mage::getResourceModel('catalog/category')->getCategories($categoryId, 0, true);
$printCategories = function($nodes) use (&$printCategories) {

   foreach ($nodes as $_category):
      $ctdf=$_category->getId();
      $categoryn = Mage::getModel('catalog/category')->load($ctdf);
          if($ctdf!='' && $categoryn->getIsActive()):
                //here call to function by passing a value
                printtest($ctdf);   
          $printCategories($_category->getChildren());       
        endif; 
  endforeach; 


};


$printCategories($categoryTree);

//sleep(10);



// i try to get array results here but it shows empty
var_dump($ctall);

Anyone know how to fix this, i tried hours without luck. Thank You

I don't think all code what you shown are in the same file. because if it was it have to work. (As i can see second-code used amgento syntaxes while first-code is normal php function syntaxes) — Death-is-the-real-truth
– Death-is-the-real-truth, Commented Jan 25, 2018 at 11:17
above one also not working, the first function i use for explain simply which also have some magento codes too — Suneth Kalhara
– Suneth Kalhara, Commented Jan 25, 2018 at 11:18

Mochamad Arifin · Accepted Answer · 2018-01-25 11:50:08Z

2

remove all declaration of $ctall, and try this:

//remove define array, don't define it
// $ctall=array();

function printtest($fg){

    if(!isset($GLOBALS['ctall'])){
        $GLOBALS['ctall'] = array();
    }
    //assign to global
    $GLOBALS['ctall'][rand(10000,100000)]=$fg;
}

on outside, dump like this:

var_dump($GLOBALS['ctall'])

edited Jan 25, 2018 at 11:50

answered Jan 25, 2018 at 11:30

Mochamad Arifin

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7 Comments

Suneth Kalhara Over a year ago

same results mate array(0) { }

Mochamad Arifin Over a year ago

Maybe you call from inside another function or class, try add: global $ctall; before: var_dump($ctall);

Suneth Kalhara Over a year ago

no mate it's outside the functions, i just add that to test after add var_dump print null instead of array(0) { }

Mochamad Arifin Over a year ago

try to declare static $ctall=array(); on before $categoryTree = Mage::getResourceModel..... and delete declaration on before the function, make sure you just declare $ctall once.

Mochamad Arifin Over a year ago

okay, the last solution, you can use $_GLOBALS variable directly, I will edit my answer

|

Amr Berag · Accepted Answer · 2018-01-25 11:59:05Z

1

Try to push instead of assigning.Try this:

$ctall[][rand(10000,100000)]=$fg; //notice the empty square brackets

you can try this also:

function printtest($fg){
  global $ctall;
  $new_array =array();
  $new_array[rand(10000,100000)] = $fg;
  array_merge($ctall, $new_array);
}

edited Jan 25, 2018 at 11:59

answered Jan 25, 2018 at 11:20

Amr Berag

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7 Comments

Death-is-the-real-truth Over a year ago

Are you serious right now? it will give him another issue also.->can't use empty index for assignmenrt

Death-is-the-real-truth Over a year ago

Now it even worse.You are unnecessarly using extra code.

Amr Berag Over a year ago

@Alive to Die : Can you then tell us how to push element into associative array? I mean push not assign

Death-is-the-real-truth Over a year ago

In OP's case there is no need of push. His question is why global is also not working in his case. Your answer is far away from what he is asking

Amr Berag Over a year ago

but did you realize that I'm trying to push and not make assignment?

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