What are common debugging strategies for PHP code when encountering issues like the one with the cart not displaying?

Issue: The cart is not displaying due to potential errors in the PHP code handling the cart data. To debug this issue, check for any syntax errors, ensure the cart data is being properly retrieved and displayed, and verify that the necessary variables are being passed correctly. Code snippet: 

<?php
// Check for syntax errors and debug any potential issues
error_reporting(E_ALL);
ini_set('display_errors', 1);

// Ensure cart data is properly retrieved and displayed
session_start();
if(isset($_SESSION['cart'])) {
    foreach($_SESSION['cart'] as $item) {
        echo $item['name'] . ' - $' . $item['price'] . '<br>';
    }
} else {
    echo 'Cart is empty';
}

// Verify necessary variables are being passed correctly
// Make sure the cart data is properly stored and retrieved in the session
?>

Keywords

PHP debugging cart display troubleshooting

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