How can PHP be used to load a file with content (including paragraphs) into a textarea for user input and then save the user's input during evaluation?

To load a file with content into a textarea for user input in PHP, you can use the `file_get_contents()` function to read the file content and then echo it within the textarea tag. To save the user's input during evaluation, you can use the `file_put_contents()` function to write the user's input back to the file. 

<?php
$file = 'example.txt';

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $user_input = $_POST['user_input'];
    file_put_contents($file, $user_input);
}

$content = file_get_contents($file);
?>

<form method="post">
    <textarea name="user_input"><?php echo $content; ?></textarea>
    <input type="submit" value="Save">
</form>

Keywords

PHP file handling textarea user input saving data

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