How can PHP developers force the browser to cache generated HTML code for better performance?

To force the browser to cache generated HTML code for better performance, PHP developers can set the appropriate HTTP headers to instruct the browser to cache the content. By setting the "Cache-Control" and "Expires" headers, developers can control how long the browser should cache the HTML content before requesting it again from the server. 

<?php
// Set the appropriate headers to force browser caching
header("Cache-Control: public");
header("Expires: " . gmdate('D, d M Y H:i:s', time() + 3600) . ' GMT'); // Cache for 1 hour

// Output your HTML content here
echo '<html><head><title>Cache Example</title></head><body><h1>Hello, World!</h1></body></html>';
?>

Keywords

PHP browser caching HTML code performance optimization headers

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