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PHP

Posted by Adam Zuckerberg
Adam Zuckerberg
22,248 Points

Build a Simple (NOT!) PHP Application - $GET

I keep getting this error on the localhost website:Notice: Undefined index: id in C:\xampp\htdocs\shirt.php on line 3 array(4) { ["name"]=> string(15) "Logo Shirt, Red" ["img"]=> string(24) "img/shirts/shirt-101.jpg" ["price"]=> int(18) ["paypal"]=> string(13) "H7DSWSKWHNARY" } (I get that error when I replace line 4 with "101" instead of the $product_id variable, and if I leave it as is. I get this: Notice: Undefined index: id in C:\xampp\htdocs\shirt.php on line 3

Notice: Undefined index: in C:\xampp\htdocs\shirt.php on line 4 NULL I pasted in the project files "shirt.php" just to make sure it was accurate, but I am still getting these errors. My code looks like this: <?php include("inc/products.php");

$product_id = $_GET["id"]; $product = $products[$product_id];

?><pre><?php

echo $product_id . "\n"; var_dump($product);

?></pre>

3 Answers

Fraser Boag
Fraser Boag
6,381 Points
Fraser Boag
Fraser Boag
6,381 Points

Not sure of your level with PHP, so apologies if this is insultingly obvious, but are you definitely setting the "id" superglobal in the URL? i.e. are you navigating to shirt.php?id=1 (or whatever), as I imagine that this error could appear were you simply to navigate to shirt.php.

Véronique Bellamy
Véronique Bellamy
20,810 Points
Véronique Bellamy
Véronique Bellamy
20,810 Points

You might want to consider an isset loop. Like this:

<?php
if (isset($_GET['id'])) {
    $product_id = $_GET["id"]; $product = $products[$product_id];
    echo "<pre>" . $product_id . "\n";
    echo var_dump($product);
    echo "</pre>";
    exit();
}

?>
Adam Zuckerberg
Adam Zuckerberg
22,248 Points
Adam Zuckerberg
Adam Zuckerberg
22,248 Points

$Level_of_frustration_with_this_course_on_a_scale_of_1_to_10 = 10