2kb-performance will cache your css and javascript files and separate them in the header or footer. Moreover css compression will be applied via YUI-CSS-compressor-PHP.
Every day Cron Job or plugin activate/disable will renew your 2kb-performance files.
cssCachedFile = $this->getCssCachedFile();
$this->jsCachedFile = $this->getJsCachedFile();
include KbPerformancePluginPath . 'admin-template.php';
}
public function getCssCachedFile()
{
return get_option(self::CSS_OPTION, null);
}
public function getJsCachedFile()
{
return get_option(self::JS_OPTION, null);
}
public function generateCacheFiles()
{
$this->reload = true;
$this->clearOptions();
$this->fileGetContents(get_site_url() . '?2kb-performance-cache=1');
}
/**
* Make css content cross browser accessable
* @var $css [url, link]
*/
public function filterCssContent($string, $css)
{
$url = $css['url'];
$parts = parse_url($url);
$pathParts = explode('/', $parts['path']);
unset($pathParts[count($pathParts) - 1]);
$parts['scheme'] = isset($parts['scheme']) ? $parts['scheme'] : 'http';
$baseCssUrl = sprintf(
'%s://%s%s/',
$parts['scheme'],
$parts['host'],
implode('/', $pathParts)
);
$matches = array();
$pattern = "/url\((.*?)\)/";
preg_match_all($pattern, $string, $matches);
$search = array();
$replace = array();
if (isset($matches[1]) && !empty($matches[1])) {
foreach ($matches[1] as $url) {
$search[] = $url;
$replace[] = $baseCssUrl . str_replace(array('"', "'"), '', $url);
}
}
$string = str_replace($search, $replace, $string);
if ($css['media'] && $css['media'] != 'all') {
$media = $css['media'];
$string = "
\n
@media $media { \n
$string \n
};\n
";
}
return $string;
}
public function filterJsContent($string, $js)
{
$url = $js['url'];
$string = "
\n
/*\n 2kb-performance cached:\n $url \n*/ \n
" . $string;
if (isset($js['ob']->extra['data']) && !empty($js['ob']->extra['data'])) {
$string = "\n" . $js['ob']->extra['data'] . "\n;\n" . $string;
}
$string .= "\n;";
return $string;
}
public function styleLoaderTagRemove($str, $handle)
{
if ($this->hasCssHandle($handle)) {
$str = "\n";
}
return $str;
}
public function scriptLoaderTagRemove($src, $handle)
{
if ($this->hasJsUrl($src)) {
return false;
}
return $src;
}
public function hasCssHandle($handle)
{
$css = $this->getCssCachedFile();
if ($css) {
foreach ($css['css'] as $d) {
if ($d['handle'] == $handle) {
return true;
}
}
}
return false;
}
public function hasJsHandle($handle)
{
$js = $this->getJsCachedFile();
if ($js) {
foreach ($js as $name => $jsData) {
foreach ($jsData['js'] as $d) {
if ($d['handle'] == $handle) {
return true;
}
}
}
}
return false;
}
public function hasJsUrl($url)
{
$url = $this->prepareUrl($url);
$js = $this->getJsCachedFile();
if ($js) {
foreach ($js as $name => $jsData) {
foreach ($jsData['js'] as $d) {
if ($this->prepareUrl($d['url']) == $url) {
return true;
}
}
}
}
return false;
}
protected function fileGetContents($url)
{
$url .= (strpos($url, '?') === false ? '?' : '&') . '2kb-performance-request=1';
$data = wp_remote_get($url);
return is_array($data)
&& isset($data['body'])
&& !empty($data['body'])
? $data['body'] : false;
}
protected function filePutContents($name, $data)
{
$handle = fopen($name, 'w') or die('Cannot open file: '.$name);
fwrite($handle, $data);
fclose($handle);
}
protected function getHostname()
{
if (!isset($this->hostName)) {
$parts = parse_url(get_site_url());
$this->hostName = str_replace('www.', '', $parts['host']);
}
return $this->hostName;
}
function getKbPluginUrl($append = null)
{
return get_site_url() . '/wp-content/plugins/' . KbPerformanceFolderName . ($append ? '/' : '') . $append;
}
function formatSizeUnits($bytes)
{
if ($bytes >= 1073741824) {
$bytes = number_format($bytes / 1073741824, 2) . ' GB';
} elseif ($bytes >= 1048576) {
$bytes = number_format($bytes / 1048576, 2) . ' MB';
} elseif ($bytes >= 1024) {
$bytes = number_format($bytes / 1024, 2) . ' KB';
} elseif ($bytes > 1) {
$bytes = $bytes . ' bytes';
} elseif ($bytes == 1) {
$bytes = $bytes . ' byte';
} else {
$bytes = '0 bytes';
}
return $bytes;
}
protected function getBetween($content, $start, $end)
{
$r = explode($start, $content);
if (isset($r[1])){
$r = explode($end, $r[1]);
return $r[0];
}
return null;
}
}