How can PHP be used to update a .txt file based on user input from a form without using a database?

To update a .txt file based on user input from a form without using a database, you can read the content of the file, modify it according to the user input, and then write the updated content back to the file. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $user_input = $_POST["user_input"];
    
    $file_path = "data.txt";
    $content = file_get_contents($file_path);
    
    // Update the content based on user input
    $updated_content = $content . "\n" . $user_input;
    
    file_put_contents($file_path, $updated_content);
    
    echo "File updated successfully!";
}
?>

Keywords

PHP file handling form submission user input text file manipulation

Related Questions