What are the potential issues with using frames in PHP websites?

One potential issue with using frames in PHP websites is that it can affect the website's search engine optimization (SEO) by creating duplicate content issues. To solve this problem, you can use PHP to detect if the page is being loaded within a frame and redirect to the main page if necessary. 

if (isset($_SERVER['HTTP_REFERER']) && strpos($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST']) === false) {
    header("Location: http://www.yourwebsite.com");
    exit();
}

Keywords

Frames PHP websites security vulnerabilities deprecated cross-site scripting

Related Questions