What potential issues can arise when mixing FTP and HTTP protocols in an iFrame within a PHP page?

Mixing FTP and HTTP protocols in an iFrame within a PHP page can lead to security vulnerabilities and compatibility issues. To solve this problem, you should ensure that all resources loaded in the iFrame use the same protocol (either FTP or HTTP) to prevent any mixed content warnings or potential security risks. 

<?php
// Ensure all resources in the iFrame use the same protocol (either FTP or HTTP)
$iframe_src = "http://example.com";
?>
<iframe src="<?php echo $iframe_src; ?>"></iframe>

Keywords

FTP HTTP iFrame PHP Cross-origin restrictions

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