How can HTTP headers be used to prevent caching issues in PHP web development?

To prevent caching issues in PHP web development, you can use HTTP headers to control how browsers and proxies cache your web pages. By setting appropriate cache-control headers, you can ensure that the browser fetches a fresh copy of the page from the server instead of using a cached version. This can be particularly useful when dealing with dynamic content that frequently changes. 

<?php
header("Cache-Control: no-cache, must-revalidate"); // HTTP 1.1.
header("Pragma: no-cache"); // HTTP 1.0.
header("Expires: 0"); // Proxies.
?>

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HTTP headers caching PHP web development prevent

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