What are some best practices for debugging PHP code, especially when dealing with form submissions and input validation?

Issue: When dealing with form submissions and input validation in PHP, it's important to properly debug the code to ensure that the form data is being processed correctly and that any validation errors are being handled appropriately. Best practice for debugging PHP code in this scenario includes using var_dump() or print_r() to output the form data and any validation errors, checking for syntax errors or typos in the code, and using error_reporting(E_ALL) to display all errors and warnings. 

<?php
// Debugging form submissions and input validation in PHP

// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Debug form data
    var_dump($_POST);

    // Input validation
    $name = $_POST['name'];
    if (empty($name)) {
        $error = "Name is required";
        echo $error;
    }
}
?>

Keywords

Xdebug var_dump error_reporting filter_input validation

Related Questions