php error message thru controller, and on php

Question

if($_POST)
{

    if(array_key_exists("item_id", $_POST))   // asking if the array exists in data.php,
    {


        $item_ids = $_POST["item_id"];       // temp var. to hold the data.php data
        $price=0;
        foreach ($items as $item) 
        {
            foreach($item_ids as $value)
            {
                if($value==$item['id'])      //checking for the ids that were store in array
                 $price+=$item['price'];    // adds price of the ids that are selected
            }

        }
        require_once("view_confirm.php");   //shows the total of price in the view_confirm.php
        die();  


     //if there wasnt any selected boxes its set to true for a statement to be stated on view_items
    }
    $error_no_items_selected =true;
}

My function works, I have a problem displaying an error message when the there is no click boxes, I set the value to false above post, $error_items_selected, on my view_items.php is HTML code, where I also use:

<?php if(error_items_selected==true){echo "Click Something";}

every time I refresh the page the message already appears,

error_items_selected == true should be $error_items_selected == true — Pete
– Pete, Commented Oct 21, 2015 at 19:59

u_mulder · Accepted Answer · 2015-10-21 19:42:15Z

1

In

if(error_items_selected==true){echo "Click Something";}

error_items_selected should have a $ if it's a variable.

Or () if it's a function call.

If you use error_items_selected - PHP considers it a constant. And if you don't have such constant, that is obvious, error_items_selected is considered a 'error_items_selected' string which is definitely true.

So proper way should be:

if ($error_items_selected==true){echo "Click Something";}

Also in first code block you use $error_no_items_selected. Maybe it's just different variables, but still - check them.

answered Oct 21, 2015 at 19:42

u_mulder

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