Are there known compatibility issues between PHP framesets and Mozilla Firefox that could cause display problems?

There are known compatibility issues between PHP framesets and Mozilla Firefox that could cause display problems due to the way Firefox handles frames. To solve this issue, you can use the X-Frame-Options header in your PHP code to control how your content is displayed in frames within Firefox. 

<?php
header("X-Frame-Options: DENY");
?>

Keywords

PHP framesets compatibility Mozilla Firefox display problems

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