Are there any specific PHP functions or headers that can help control browser caching behavior?

Browser caching behavior can be controlled using PHP by sending specific headers to the browser. One common way to control caching is by setting the "Cache-Control" header to specify how long the browser should cache the content. Additionally, setting the "Expires" header can provide an expiration date for the cached content. By using these headers, you can ensure that the browser caches content for the desired duration and reduces unnecessary requests to the server. 

// Set the Cache-Control header to specify caching behavior
header("Cache-Control: max-age=3600, public");

// Set the Expires header to provide an expiration date for the cached content
$expires = gmdate('D, d M Y H:i:s', time() + 3600) . ' GMT';
header("Expires: $expires");

Keywords

PHP functions headers browser caching control behavior

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