In what scenarios would using a text file with specific content be a workaround for handling user input in PHP scripts?

Using a text file with specific content can be a workaround for handling user input in PHP scripts when the input needs to be restricted to a predefined set of values. This can be useful when creating a dropdown menu or a list of options for the user to choose from. By storing the allowed values in a text file, the PHP script can read from this file to validate and process the user input. 

<?php
// Read the allowed values from a text file
$allowed_values = file('allowed_values.txt', FILE_IGNORE_NEW_LINES);

// Get user input
$user_input = $_POST['user_input'];

// Check if user input is in the list of allowed values
if (in_array($user_input, $allowed_values)) {
    // Process the user input
    echo "User input is valid: " . $user_input;
} else {
    // Handle invalid user input
    echo "Invalid user input";
}
?>

Keywords

text file user input PHP scripts handling workaround

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