php - foreach gives me a warning of undefined variable -

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• reference: variable scope, variables accessible , “undefined variable” errors? 3 answers

i'm making class, "item", intent used this:

require_once("item.php"); $myitem = new item(); $myitem->setname("test"); $myitem->adddeal(5,25); $myitem->show(); 

the show() function should add object on global array called $items

the class in item.php looks this:

    $items = array();      class item     {     public $name = "undefined";     public $image;     public $deals = array();      public function setimage($path)     {         $this->image = (string)$path;     }      public function setname($name)     {         $this->name = (string)$name;     }      public function adddeal($amount, $price)     {         $this->deals[(string)$amount] = (string)$price;     }      public function show()     {         $this->errorcheck();          $items[$this->name] = $this;     }      private function errorcheck()     {         //make sure image has been set         //if(empty($this->image))         //  die("error: no image set item: ".$this->name);          //make sure atleast 1 deal has been set         if(count($this->deals) <= 0)             die("error: no deals set item: ".$this->name);          //make sure item doesn't exist         foreach($items $key => $value)         {             if($value->name == $this->name)                 die("error: duplicate item: ".$this->name);         }       }     } 

as can see, when show() function gets called, first runs errorcheck() method , proceeds add own object $items array.

or, @ least, that's should happen. because when run in webbrowser warning:

notice: undefined variable: items in c:\xampp\htdocs\shop\config-api.php on line 49  warning: invalid argument supplied foreach() in c:\xampp\htdocs\shop\config-api.php on line 49 

why cant find $items variable? , how can fix it? (btw, line 49 @ foreach loop in errorcheck() );

that because variable $items doesn't belong local scope in function, should indicate use global.

adding function errorcheck fix issue:

global $items;