Question

I write this in a page :

require_once("pdf/tab_activite.php");
...
foreach ($tab["activite"] as $key => $value) 
{
   ...
}

Inside the tab_activite.php there is this :

...
$list = new activite($this->db);
$list->lireParNiveau($critere);
$tab["activite"] = $list->tableau ;
...

Then in the log there is :

[10-Oct-2012 10:30:48] PHP Notice:  Undefined index:  activite in C:\wamp\www\mp\models\objet.class.php on line 543
[10-Oct-2012 10:30:48] PHP Warning:  Invalid argument supplied for foreach() in C:\wamp\www\mp\models\objet.class.php on line 543

So how to manipulate correctly the $tab[“activite”] variable ?

Answer 1

Since the require_once() is called inside a function, $tab["activite"] exists only in that function’s scope. Add the statement global $tab; to the file tab_activite.php before using the $tab variable to extend it’s scope so that the main program can see it as well.

global $tab;
$list = new activite($this->db);
$list->lireParNiveau($critere);
$tab["activite"] = $list->tableau ;

EDIT: Another problem could occur if you call the function multiple times, as the file is included only once when using require_once(). If this is the case, replace require_once() with require() and see if that helps.