How can PHP handle special characters like " and ' when writing text from a form to a file?

When writing text from a form to a file in PHP, special characters like " and ' can cause issues if not properly handled. To solve this problem, you can use the `addslashes()` function to escape these special characters before writing the text to the file.

// Get the text input from the form
$text = $_POST['text'];

// Escape special characters in the text
$escaped_text = addslashes($text);

// Write the escaped text to a file
$file = fopen("data.txt", "w");
fwrite($file, $escaped_text);
fclose($file);