How can PHP developers optimize webpage loading times by implementing techniques like image compression and parallel loading of resources?

To optimize webpage loading times, PHP developers can implement techniques like image compression and parallel loading of resources. Image compression reduces the file size of images, resulting in faster loading times. Parallel loading allows multiple resources to be loaded simultaneously, further speeding up the loading process. 

// Image compression using PHP
function compress_image($source, $destination, $quality) {
    $info = getimagesize($source);
    if ($info['mime'] == 'image/jpeg') {
        $image = imagecreatefromjpeg($source);
        imagejpeg($image, $destination, $quality);
    } elseif ($info['mime'] == 'image/png') {
        $image = imagecreatefrompng($source);
        imagepng($image, $destination, $quality);
    }
}

// Parallel loading of resources using PHP
$urls = array(
    'https://example.com/image1.jpg',
    'https://example.com/image2.jpg',
    'https://example.com/image3.jpg'
);

$curl_handlers = array();
foreach ($urls as $url) {
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $curl_handlers[] = $ch;
}

$mh = curl_multi_init();
foreach ($curl_handlers as $ch) {
    curl_multi_add_handle($mh, $ch);
}

$active = null;
do {
    $mrc = curl_multi_exec($mh, $active);
} while ($mrc == CURLM_CALL_MULTI_PERFORM || $active);

foreach ($curl_handlers as $ch) {
    curl_multi_remove_handle($mh, $ch);
    curl_close($ch);
}
curl_multi_close($mh);

Keywords

PHP webpage loading times image compression parallel loading resources

Related Questions