In the context of the provided code, how does PHP handle form submission and data processing within the same file?

When handling form submission and data processing within the same file in PHP, you can use conditional statements to check if the form has been submitted. If the form has been submitted, you can process the data and perform any necessary actions. If the form has not been submitted, you can display the form for the user to fill out. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Form submitted, process the data
    $name = $_POST["name"];
    $email = $_POST["email"];
    
    // Perform data processing or validation here
    
    // Redirect or display a success message
} else {
    // Display the form for the user to fill out
    ?>
    <form method="post" action="<?php echo $_SERVER["PHP_SELF"];?>">
        <input type="text" name="name" placeholder="Name">
        <input type="email" name="email" placeholder="Email">
        <button type="submit">Submit</button>
    </form>
    <?php
}
?>

Keywords

PHP form submission data processing same file handling data

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