What is the common method for accessing form input values in PHP?

To access form input values in PHP, you can use the `$_POST` or `$_GET` superglobals, depending on the form submission method (POST or GET). These superglobals store form input values in an associative array where the input name serves as the key. You can access the value of a specific input field by using its name as the key in the `$_POST` or `$_GET` superglobal. 

// Assuming a form with an input field named 'username'
if(isset($_POST['username'])) {
    $username = $_POST['username'];
    // Use $username variable for further processing
}

Keywords

$_POST $_GET $_REQUEST filter_input form handling

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