Are there any recommended standards or best practices for using placeholders in CSS templates for dynamic CSS in PHP?

When using dynamic CSS in PHP templates, it's important to use placeholders to easily insert dynamic values into your CSS. This can help streamline your code and make it easier to manage and update styles across your website. One recommended practice is to define your dynamic values as variables in your PHP file and then use placeholders in your CSS template to insert these values dynamically.

<?php
// Define dynamic CSS values as variables
$primaryColor = '#ff0000';
$fontSize = '16px';
?>

<style>
  /* CSS template with placeholders */
  body {
    color: <?php echo $primaryColor; ?>;
    font-size: <?php echo $fontSize; ?>;
  }
</style>