How Can I Optimize My PHP Page's HTML Output for Faster Loading?

Optimize PHP Page HTML Output for Enhanced Page Speed

Question: How can I optimize the HTML output of my PHP page to minimize its size and improve page load speed?

Answer:

1. Leverage External Compression (JavaScript and CSS)

Consider using a third-party tool like Minify (https://github.com/mrclay/minify) to compress your external JavaScript and CSS files.

2. Enable GZIP Compression

Enable GZIP compression on your Apache server to reduce the response size of your HTML content by approximately 70%.

Accept-Encoding: gzip, deflate
Content-Encoding: gzip

3. Remove Excessive Whitespace

To further reduce the size of your HTML, you can use regular expressions or the following PHP snippet to remove unnecessary whitespace from your output.

function sanitize_output($buffer) {
    $search = array(
        '/\>[^\S ]+/s',
        '/[^\S ]+\</s',
        '/(\s)+/s',
        '/<!--(.|\s)*?-->/'
    );

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

    $buffer = preg_replace($search, $replace, $buffer);

    return $buffer;
}

ob_start("sanitize_output");

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