What resources or tutorials are available for learning how to handle form submissions and user input in PHP?

Handling form submissions and user input in PHP involves capturing data from HTML forms, validating the input, and processing the data accordingly. It is essential to sanitize and validate user input to prevent security vulnerabilities like SQL injection and cross-site scripting attacks. PHP provides built-in functions like $_POST and $_GET to access form data submitted via POST and GET methods. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $name = $_POST['name'];
    $email = $_POST['email'];
    
    // Validate and sanitize input
    $name = filter_var($name, FILTER_SANITIZE_STRING);
    $email = filter_var($email, FILTER_SANITIZE_EMAIL);
    
    // Process the form data
    // Insert data into database, send email, etc.
}
?>

Keywords

PHP form handling user input validation form submission PHP tutorials PHP libraries

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