How can PHP beginners effectively debug and troubleshoot issues related to form submissions and database queries?

Issue: PHP beginners can effectively debug and troubleshoot issues related to form submissions and database queries by utilizing error reporting, checking for syntax errors, using var_dump() or print_r() to inspect variables, and logging errors to a file for further analysis. 

<?php
// Enable error reporting
error_reporting(E_ALL);
ini_set('display_errors', 1);

// Check for syntax errors
if (isset($_POST['submit'])) {
    // Form submission handling code
    $name = $_POST['name'];
    $email = $_POST['email'];
    
    // Database query code
    $query = "INSERT INTO users (name, email) VALUES ('$name', '$email')";
    
    // Execute query
    if ($result = $mysqli->query($query)) {
        echo "Data inserted successfully!";
    } else {
        // Log errors to a file
        error_log("Error: " . $mysqli->error, 3, "error.log");
    }
}
?>

Keywords

PHP debugging troubleshooting form submissions database queries

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