What is the expected return value of file_get_contents() on failure and how can this be used to handle errors?

When file_get_contents() fails, it returns false. To handle errors, you can check the return value of file_get_contents() and handle the failure gracefully by displaying an error message or taking alternative actions.

$content = file_get_contents('example.txt');

if($content === false) {
    echo "Error: Unable to read file.";
    // Handle the error here, such as logging it or displaying a message to the user
} else {
    // Process the file content
    echo $content;
}