How can I set gzip compression in zend framework website - optimization

Question

I am new to zend. I have developed a website using zend framework. Now, I want to set gzip compression in my website. Would you please guide me step wise to implement this.
Thanks in advance.
kamal Arora

Answer 1

There are two methods to gzip output in your website.
Using Webserver.If your webserver is apache you can refer here for a good documentation on how to enable mod_deflate on your server.
Using zend framework. Try the following code which is from this website.
Create a gzip compressed string in your bootstrap file.
Code:
try {
$frontController = Zend_Controller_Front::getInstance();
if (#strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== false) {
ob_start();
$frontController->dispatch();
$output = gzencode(ob_get_contents(), 9);
ob_end_clean();
header('Content-Encoding: gzip');
echo $output;
} else {
$frontController->dispatch();
}
} catch (Exeption $e) {
if (Zend_Registry::isRegistered('Zend_Log')) {
Zend_Registry::get('Zend_Log')->err($e->getMessage());
}
$message = $e->getMessage() . "\n\n" . $e->getTraceAsString();
/* trigger event */
}
GZIP does not compress images, just the raw HTML/CSS/JS/XML/JSON code from the site being sent to the user.

Answer 2

I made for zend framework 2 (zf2) with your tip
public function onBootstrap(MvcEvent $e)
{
$eventManager = $e->getApplication()->getEventManager();
$eventManager->attach("finish", array($this, "compressOutput"), 100);
}
public function compressOutput($e)
{
$response = $e->getResponse();
$content = $response->getBody();
$content = str_replace(" ", " ", str_replace("\n", " ", str_replace("\r", " ", str_replace("\t", " ", $content))));
if(#strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== false)
{
header('Content-Encoding: gzip');
$content = gzencode($content, 9);
}
$response->setContent($content);
}

Answer 3

Honoring the answer of Bruno Pitteli, I think you can compress in the following way:
$search = array(
'/\>[^\S ]+/s', // strip whitespaces after tags, except space
'/[^\S ]+\</s', // strip whitespaces before tags, except space
'/(\s)+/s', // shorten multiple whitespace sequences
'#(?://)?<![CDATA[(.*?)(?://)?]]>#s' //leave CDATA alone
);
$replace = array(
'>',
'<',
'\\1',
"//<![CDATA[n".'1'."n//]]>"
);
$content = preg_replace($search, $replace, $content);
So the full code sample now looks like:
public function onBootstrap(MvcEvent $e)
{
$eventManager = $e->getApplication()->getEventManager();
$eventManager->attach("finish", array($this, "compressOutput"), 100);
}
public function compressOutput($e)
{
$response = $e->getResponse();
$content = $response->getBody();
$content = preg_replace(array('/\>[^\S ]+/s', '/[^\S ]+\</s', '/(\s)+/s', '#(?://)?<![CDATA[(.*?)(?://)?]]>#s'), array('>', '<', '\\1', "//<![CDATA[n".'1'."n//]]>"), $content);
if (#strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== false) {
header('Content-Encoding: gzip');
$content = gzencode($content, 9);
}
$response->setContent($content);
}