How does HTML encoding interact with URL encoding in PHP?

When dealing with HTML encoding and URL encoding in PHP, it's important to understand that HTML encoding is used to escape special characters in HTML, while URL encoding is used to encode special characters in URLs. To properly handle both encodings, you can first HTML encode the data and then URL encode it before including it in a URL. 

$data = "<script>alert('Hello, World!')</script>"; // Data to be encoded

$htmlEncoded = htmlspecialchars($data); // HTML encoding
$urlEncoded = urlencode($htmlEncoded); // URL encoding

echo $urlEncoded; // Output: %3Cscript%3Ealert%28%27Hello%2C%20World%21%27%29%3C%2Fscript%3E

Keywords

HTML encoding URL encoding PHP htmlspecialchars urlencode

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