How can the use of PHP in generating CSS impact browser compatibility, especially in older versions like IE?

When using PHP to generate CSS, browser compatibility can be impacted, especially in older versions like IE, due to the way PHP dynamically generates styles. To ensure better compatibility, it is recommended to use CSS classes and IDs in a more static manner rather than dynamically generating styles with PHP. 

<?php
// Instead of dynamically generating CSS styles with PHP, use static CSS classes and IDs
echo '<div class="my-div">Content</div>';
?>

<style>
.my-div {
  color: red;
  font-size: 16px;
}
</style>

Keywords

PHP CSS generation browser compatibility IE older versions

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