How can caching affect the decision to clean up HTML code in PHP for file size optimization?

Caching can affect the decision to clean up HTML code in PHP for file size optimization because cached files are stored and reused, meaning any optimizations made to the code will only be applied once. However, cleaning up the HTML code can still be beneficial for the initial load time of the page before it gets cached. 

// Example PHP code snippet to clean up HTML code for file size optimization
function clean_html($html) {
    $search = array(
        '/\>[^\S ]+/s',  // strip whitespaces after tags
        '/[^\S ]+\</s',  // strip whitespaces before tags
        '/(\s)+/s'       // shorten multiple whitespace sequences
    );

    $replace = array(
        '>',
        '<',
        '\\1'
    );

    return preg_replace($search, $replace, $html);
}

$html = "<html>   <body>   <p>   Hello, world!   </p>   </body>   </html>";
$cleaned_html = clean_html($html);
echo $cleaned_html;

Keywords

caching HTML code PHP file size optimization clean up

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