What are the potential pitfalls of using incorrect syntax in PHP form data handling?

Using incorrect syntax in PHP form data handling can lead to errors in processing the data, potentially causing the form submission to fail or display incorrect information. To avoid these pitfalls, it is important to ensure that the syntax used to access and manipulate form data is correct and follows PHP conventions. 

// Correct syntax for accessing form data using $_POST
if(isset($_POST['submit'])) {
    $username = $_POST['username'];
    $password = $_POST['password'];
    
    // Process the form data here
}

Keywords

syntax error form data handling PHP validation security

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