What are best practices for identifying and removing unwanted line breaks in PHP files?

Unwanted line breaks in PHP files can cause formatting issues and make the code harder to read. To identify and remove these line breaks, you can use a regular expression to search for instances where there are line breaks without any code content in between. Once identified, you can remove these line breaks to clean up the code.

// Identify and remove unwanted line breaks in a PHP file
$file = 'example.php';
$content = file_get_contents($file);

// Use regular expression to remove unwanted line breaks
$content = preg_replace("/\n\s*\n/", "\n", $content);

file_put_contents($file, $content);