What are the potential drawbacks of saving PHP echo outputs directly to a text file?

Saving PHP echo outputs directly to a text file can lead to issues with formatting, especially if the output contains HTML tags or special characters. To solve this problem, you can use output buffering to capture the echo output in a variable and then write that variable to a text file.

ob_start();
echo "Hello, world!";
$output = ob_get_clean();

$file = fopen("output.txt", "w");
fwrite($file, $output);
fclose($file);