How does the order of execution of PHP and HTML code affect the functionality of a form submission that interacts with a MySQL database?

When PHP code is executed before HTML code, it allows the form submission to interact with the MySQL database properly. This ensures that the database connection is established and data is processed correctly. To solve this issue, make sure that the PHP code for database interaction is placed before the HTML form in the file. 

<?php
// PHP code for database connection and form submission
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Process form submission and interact with the database

?>

<!DOCTYPE html>
<html>
<head>
    <title>Form Submission</title>
</head>
<body>
    <form method="post" action="">
        <!-- HTML form elements -->
    </form>
</body>
</html>

Keywords

PHP HTML form submission MySQL database order of execution

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