ZF-5413: using "$var === null" instaed of "is_null($var)"

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@23168 44c647ce-9c0f-0410-b52a-842ac1e357ba

library/Zend/Feed/Pubsubhubbub/Subscriber.php

@@ -736,7 +736,7 @@ class Zend_Feed_Pubsubhubbub_Subscriber
             $params['hub.callback'] = rtrim($this->getCallbackUrl(), '/')
                 . '/' . Zend_Feed_Pubsubhubbub::urlencode($key);
         }
-        if ($mode == 'subscribe' && !is_null($this->getLeaseSeconds())) {
+        if ($mode == 'subscribe' && $this->getLeaseSeconds() !== null) {
             $params['hub.lease_seconds'] = $this->getLeaseSeconds();
         }
 

library/Zend/Feed/Reader/Extension/Atom/Entry.php

@@ -584,7 +584,7 @@ class Zend_Feed_Reader_Extension_Atom_Entry
     protected function _absolutiseUri($link)
     {
         if (!Zend_Uri::check($link)) {
-            if (!is_null($this->getBaseUrl())) {
+            if ($this->getBaseUrl() !== null) {
                 $link = $this->getBaseUrl() . $link;
                 if (!Zend_Uri::check($link)) {
                     $link = null;

library/Zend/Feed/Reader/Extension/Atom/Feed.php

@@ -539,7 +539,7 @@ class Zend_Feed_Reader_Extension_Atom_Feed
     protected function _absolutiseUri($link)
     {
         if (!Zend_Uri::check($link)) {
-            if (!is_null($this->getBaseUrl())) {
+            if ($this->getBaseUrl() !== null) {
                 $link = $this->getBaseUrl() . $link;
                 if (!Zend_Uri::check($link)) {
                     $link = null;

library/Zend/Feed/Reader/Feed/Rss.php

@@ -178,7 +178,7 @@ class Zend_Feed_Reader_Feed_Rss extends Zend_Feed_Reader_FeedAbstract
             $copyright = $this->_xpath->evaluate('string(/rss/channel/copyright)');
         }
 
-        if (!$copyright && !is_null($this->getExtension('DublinCore'))) {
+        if (!$copyright && $this->getExtension('DublinCore') !== null) {
             $copyright = $this->getExtension('DublinCore')->getCopyright();
         }
 
@@ -344,7 +344,7 @@ class Zend_Feed_Reader_Feed_Rss extends Zend_Feed_Reader_FeedAbstract
             $description = $this->_xpath->evaluate('string(/rdf:RDF/rss:channel/rss:description)');
         }
 
-        if (!$description && !is_null($this->getExtension('DublinCore'))) {
+        if (!$description && $this->getExtension('DublinCore') !== null) {
             $description = $this->getExtension('DublinCore')->getDescription();
         }
 
@@ -379,7 +379,7 @@ class Zend_Feed_Reader_Feed_Rss extends Zend_Feed_Reader_FeedAbstract
             $id = $this->_xpath->evaluate('string(/rss/channel/guid)');
         }
 
-        if (!$id && !is_null($this->getExtension('DublinCore'))) {
+        if (!$id && $this->getExtension('DublinCore') !== null) {
             $id = $this->getExtension('DublinCore')->getId();
         }
 
@@ -474,7 +474,7 @@ class Zend_Feed_Reader_Feed_Rss extends Zend_Feed_Reader_FeedAbstract
             $language = $this->_xpath->evaluate('string(/rss/channel/language)');
         }
 
-        if (!$language && !is_null($this->getExtension('DublinCore'))) {
+        if (!$language && $this->getExtension('DublinCore') !== null) {
             $language = $this->getExtension('DublinCore')->getLanguage();
         }
 
@@ -612,7 +612,7 @@ class Zend_Feed_Reader_Feed_Rss extends Zend_Feed_Reader_FeedAbstract
             $title = $this->_xpath->evaluate('string(/rdf:RDF/rss:channel/rss:title)');
         }
 
-        if (!$title && !is_null($this->getExtension('DublinCore'))) {
+        if (!$title && $this->getExtension('DublinCore') !== null) {
             $title = $this->getExtension('DublinCore')->getTitle();
         }
 

library/Zend/Oauth/Consumer.php

@@ -198,7 +198,7 @@ class Zend_Oauth_Consumer extends Zend_Oauth
         }
 
         // OAuth 1.0a Verifier
-        if (!is_null($authorizedToken->getParam('oauth_verifier'))) {
+        if ($authorizedToken->getParam('oauth_verifier') !== null) {
             $params = array_merge($request->getParameters(), array(
                 'oauth_verifier' => $authorizedToken->getParam('oauth_verifier')
             ));

library/Zend/Service/WindowsAzure/Storage/Table.php

@@ -187,7 +187,7 @@ class Zend_Service_WindowsAzure_Storage_Table
 		    }
 		    
 			// More tables?
-		    if (!is_null($response->getHeader('x-ms-continuation-NextTableName'))) {
+		    if ($response->getHeader('x-ms-continuation-NextTableName') !== null) {
 		        $returnValue = array_merge($returnValue, $this->listTables($response->getHeader('x-ms-continuation-NextTableName')));
 		    }
 
@@ -603,7 +603,7 @@ class Zend_Service_WindowsAzure_Storage_Table
 		    }
 
 			// More entities?
-		    if (!is_null($response->getHeader('x-ms-continuation-NextPartitionKey')) && !is_null($response->getHeader('x-ms-continuation-NextRowKey'))) {
+		    if ($response->getHeader('x-ms-continuation-NextPartitionKey') !== null && $response->getHeader('x-ms-continuation-NextRowKey') !== null) {
 		        if (strpos($queryString, '$top') === false) {
 		            $returnValue = array_merge($returnValue, $this->retrieveEntities($tableName, $filter, $entityClass, $response->getHeader('x-ms-continuation-NextPartitionKey'), $response->getHeader('x-ms-continuation-NextRowKey')));
 		        }

library/Zend/View/Helper/HeadTitle.php

@@ -70,9 +70,9 @@ class Zend_View_Helper_HeadTitle extends Zend_View_Helper_Placeholder_Container_
      */
     public function headTitle($title = null, $setType = null)
     {
-        if ($setType === null && is_null($this->getDefaultAttachOrder())) {
+        if ($setType === null && $this->getDefaultAttachOrder() === null) {
             $setType = Zend_View_Helper_Placeholder_Container_Abstract::APPEND;
-        } elseif ($setType === null && !is_null($this->getDefaultAttachOrder())) {
+        } elseif ($setType === null && $this->getDefaultAttachOrder() !== null) {
             $setType = $this->getDefaultAttachOrder();
         }
         $title = (string) $title;