Strict type checks of null and bool

src/Composer/EventDispatcher/EventDispatcher.php

@@ -72,7 +72,7 @@ class EventDispatcher
      */
     public function dispatch($eventName, Event $event = null)
     {
-        if (null == $event) {
+        if (null === $event) {
             $event = new Event($eventName);
         }
 

src/Composer/Repository/ArtifactRepository.php

@@ -108,7 +108,7 @@ class ArtifactRepository extends ArrayRepository implements ConfigurableReposito
                 }
 
                 $length = strlen($stat['name']);
-                if ($indexOfShortestMatch == false || $length < $lengthOfShortestMatch) {
+                if ($indexOfShortestMatch === false || $length < $lengthOfShortestMatch) {
                     //Check it's not a directory.
                     $contents = $zip->getFromIndex($i);
                     if ($contents !== false) {

src/Composer/Repository/Pear/BaseChannelReader.php

@@ -73,7 +73,7 @@ abstract class BaseChannelReader
         // http://components.ez.no/p/packages.xml is malformed. to read it we must ignore parsing errors.
         $xml = simplexml_load_string($this->requestContent($origin, $path), "SimpleXMLElement", LIBXML_NOERROR);
 
-        if (false == $xml) {
+        if (false === $xml) {
             throw new \UnexpectedValueException(sprintf('The PEAR channel at ' . $origin . ' is broken. (Invalid XML at file `%s`)', $path));
         }
 

src/Composer/Util/Perforce.php

@@ -64,7 +64,7 @@ class Perforce
     public function initialize($repoConfig)
     {
         $this->uniquePerforceClientName = $this->generateUniquePerforceClientName();
-        if (null == $repoConfig) {
+        if (null === $repoConfig) {
             return;
         }
         if (isset($repoConfig['unique_perforce_client_name'])) {
@@ -313,7 +313,7 @@ class Perforce
         $prevDir = getcwd();
         chdir($this->path);
         $p4SyncCommand = $this->generateP4Command('sync -f ');
-        if (null != $sourceReference) {
+        if (null !== $sourceReference) {
             $p4SyncCommand = $p4SyncCommand . '@' . $sourceReference;
         }
         $this->executeCommand($p4SyncCommand);
@@ -362,7 +362,7 @@ class Perforce
             return;
         }
         $line = fgets($pipe);
-        while ($line != false) {
+        while ($line !== false) {
             $line = fgets($pipe);
         }
 
@@ -549,11 +549,11 @@ class Perforce
     public function getCommitLogs($fromReference, $toReference)
     {
         $fromChangeList = $this->getChangeList($fromReference);
-        if ($fromChangeList == null) {
+        if ($fromChangeList === null) {
             return null;
         }
         $toChangeList = $this->getChangeList($toReference);
-        if ($toChangeList == null) {
+        if ($toChangeList === null) {
             return null;
         }
         $index = strpos($fromReference, '@');