How can PHP developers efficiently manage and maintain styling across multiple pages or projects?

To efficiently manage and maintain styling across multiple pages or projects, PHP developers can use a CSS preprocessor like SASS or LESS. By creating reusable stylesheets and variables, developers can easily update styles across their projects without having to make individual changes to each page.

// Example of using SASS in PHP
$scss = new scssc();
$scss->setFormatter('scss_formatter_compressed');

$scss_input = file_get_contents('styles.scss');
$css_output = $scss->compile($scss_input);

file_put_contents('styles.css', $css_output);