What are some recommended debugging techniques for PHP code that involves form submissions and data handling?

Issue: When handling form submissions in PHP, it is crucial to properly debug the code to ensure that data is being processed correctly. Some recommended debugging techniques include using var_dump() or print_r() to display the contents of form data, checking for errors in the form submission process, and using error_reporting() to display any PHP errors that may occur during data handling. 

// Debugging form submissions in PHP
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Display form data using var_dump()
    var_dump($_POST);

    // Check for errors in form submission
    if (empty($_POST['username']) || empty($_POST['password'])) {
        echo "Please fill out all fields.";
    } else {
        // Process form data
        $username = $_POST['username'];
        $password = $_POST['password'];
        
        // Display any PHP errors
        error_reporting(E_ALL);
    }
}

Keywords

Xdebug var_dump error_reporting $_POST data validation

Related Questions