phpQuery::pq PHP Method

    public static function pq($arg1, $context = null)
    {
        if ($arg1 instanceof DOMNODE && !isset($context)) {
            foreach (self::$documents as $documentWrapper) {
                $compare = $arg1 instanceof DOMDocument ? $arg1 : $arg1->ownerDocument;
                if ($documentWrapper->document->isSameNode($compare)) {
                    $context = $documentWrapper->id;
                }
            }
        }
        if (!$context) {
            $domId = self::$defaultDocumentID;
            if (!$domId) {
                throw new Exception("Can't use last created DOM, because there isn't any. Use phpQuery::newDocument() first.");
            }
            //		} else if (is_object($context) && ($context instanceof PHPQUERY || is_subclass_of($context, 'phpQueryObject')))
        } elseif (is_object($context) && $context instanceof phpQueryObject) {
            $domId = $context->getDocumentID();
        } elseif ($context instanceof DOMDOCUMENT) {
            $domId = self::getDocumentID($context);
            if (!$domId) {
                //throw new Exception('Orphaned DOMDocument');
                $domId = self::newDocument($context)->getDocumentID();
            }
        } elseif ($context instanceof DOMNODE) {
            $domId = self::getDocumentID($context);
            if (!$domId) {
                throw new Exception('Orphaned DOMNode');
                //				$domId = self::newDocument($context->ownerDocument);
            }
        } else {
            $domId = $context;
        }
        if ($arg1 instanceof phpQueryObject) {
            //		if (is_object($arg1) && (get_class($arg1) == 'phpQueryObject' || $arg1 instanceof PHPQUERY || is_subclass_of($arg1, 'phpQueryObject'))) {
            /**
             * Return $arg1 or import $arg1 stack if document differs:
             * pq(pq('<div/>')).
             */
            if ($arg1->getDocumentID() == $domId) {
                return $arg1;
            }
            $class = get_class($arg1);
            // support inheritance by passing old object to overloaded constructor
            $phpQuery = $class != 'phpQuery' ? new $class($arg1, $domId) : new phpQueryObject($domId);
            $phpQuery->elements = array();
            foreach ($arg1->elements as $node) {
                $phpQuery->elements[] = $phpQuery->document->importNode($node, true);
            }
            return $phpQuery;
        } elseif ($arg1 instanceof DOMNODE || is_array($arg1) && isset($arg1[0]) && $arg1[0] instanceof DOMNODE) {
            /*
             * Wrap DOM nodes with phpQuery object, import into document when needed:
             * pq(array($domNode1, $domNode2))
             */
            $phpQuery = new phpQueryObject($domId);
            if (!$arg1 instanceof DOMNODELIST && !is_array($arg1)) {
                $arg1 = array($arg1);
            }
            $phpQuery->elements = array();
            foreach ($arg1 as $node) {
                $sameDocument = $node->ownerDocument instanceof DOMDOCUMENT && !$node->ownerDocument->isSameNode($phpQuery->document);
                $phpQuery->elements[] = $sameDocument ? $phpQuery->document->importNode($node, true) : $node;
            }
            return $phpQuery;
        } elseif (self::isMarkup($arg1)) {
            /*
             * Import HTML:
             * pq('<div/>')
             */
            $phpQuery = new phpQueryObject($domId);
            return $phpQuery->newInstance($phpQuery->documentWrapper->import($arg1));
        } else {
            /*
             * Run CSS query:
             * pq('div.myClass')
             */
            $phpQuery = new phpQueryObject($domId);
            //			if ($context && ($context instanceof PHPQUERY || is_subclass_of($context, 'phpQueryObject')))
            if ($context && $context instanceof phpQueryObject) {
                $phpQuery->elements = $context->elements;
            } elseif ($context && $context instanceof DOMNODELIST) {
                $phpQuery->elements = array();
                foreach ($context as $node) {
                    $phpQuery->elements[] = $node;
                }
            } elseif ($context && $context instanceof DOMNODE) {
                $phpQuery->elements = array($context);
            }
            return $phpQuery->find($arg1);
        }
    }

 function createSpots()
 {
     // TODO :: Some caching ??
     $this->pq = $pq = new phpQuery();
     $this->dom = $dom = $pq->newDocument($this->owner->template->template_source);
     if (!$this->owner instanceof \Frontend) {
         $pq->pq($dom)->attr('xepan-page-content', 'true');
         $pq->pq($dom)->addClass('xepan-page-content');
     }
     foreach ($dom['.xepan-component'] as $d) {
         $d = $pq->pq($d);
         if (!$d->hasClass('xepan-serverside-component')) {
             continue;
         }
         $i = $this->spots++;
         $inner_html = $d->html();
         $with_spot = '{' . $this->owner->template->name . '_' . $i . '}' . $inner_html . '{/}';
         $d->html($with_spot);
     }
     $content = $this->updateBaseHrefForTemplates();
     $content = str_replace('<!--xEpan-ATK-Header-Start', '', $content);
     $content = str_replace('xEpan-ATK-Header-End-->', '', $content);
     $this->owner->template->loadTemplateFromString($content);
     $this->owner->template->trySet($this->app->page . '_active', 'active');
 }