diff --git a/extension.driver.php b/extension.driver.php
index a06444d..fcf9ef4 100755
--- a/extension.driver.php
+++ b/extension.driver.php
@@ -58,8 +58,8 @@ public function appendPreferences($context){
 			$group->appendChild(new XMLElement('legend', __('Export Ensemble')));
 
 
-			$div = new XMLElement('div', NULL, array('id' => 'file-actions', 'class' => 'label'));
-			$span = new XMLElement('span', NULL, array('class' => 'frame'));
+			$div = new XMLElement('div', null, array('id' => 'file-actions', 'class' => 'label'));
+			$span = new XMLElement('span', null, array('class' => 'frame'));
 
 			$span->appendChild(new XMLElement('button', __('Save Install Files'), array('name' => 'action[save-install-files]', 'type' => 'submit')));
 
@@ -119,17 +119,17 @@ private function __saveInstallFiles(){
 			$config_template = $this->__createDefaultConfigFile();
 
 			// Write the install files
-			if(FALSE !== @file_put_contents(DOCROOT . '/install/includes/install.sql', $sql_schema));
+			if(false !== @file_put_contents(DOCROOT . '/install/includes/install.sql', $sql_schema));
 			else {
 				Administration::instance()->Page->pageAlert(__('An error occurred while trying to write the <code>install.sql</code> file. Check the file permissions.'), Alert::ERROR);
 				return;
 			}
-			if(FALSE !== @file_put_contents(DOCROOT . '/install/includes/config_default.php', $config_template));
+			if(false !== @file_put_contents(DOCROOT . '/install/includes/config_default.php', $config_template));
 			else {
 				Administration::instance()->Page->pageAlert(__('An error occurred while trying to write the <code>config_default.php</code> file. Check the file permissions.'), Alert::ERROR);
 				return;
 			}
-			if(FALSE !== @file_put_contents(DOCROOT . '/workspace/install.sql', $sql_data));
+			if(false !== @file_put_contents(DOCROOT . '/workspace/install.sql', $sql_data));
 			else {
 				Administration::instance()->Page->pageAlert(__('An error occurred while trying to write the <code>workspace/install.sql</code> file. Check the file permissions.'), Alert::ERROR);
 				return;
@@ -209,7 +209,7 @@ private function __getDataTables($data_tables){
 
 		private function __dumpSchema($dump, $structure_tables, $tbl_prefix){
 			// Create variables for the dump files
-			$sql_schema = NULL;
+			$sql_schema = null;
 
 			// Grab the schema
 			foreach($structure_tables as $t) $sql_schema .= $dump->export($t, MySQLDump::STRUCTURE_ONLY);
@@ -221,14 +221,14 @@ private function __dumpSchema($dump, $structure_tables, $tbl_prefix){
 			);
 
 			// Remove any AUTO_INCREMENT counts
-			$sql_schema = preg_replace('/AUTO_INCREMENT=\d+/i', NULL, $sql_schema);
+			$sql_schema = preg_replace('/AUTO_INCREMENT=\d+/i', null, $sql_schema);
 
 			return $sql_schema;
 		}
 
 		private function __dumpData($dump, $data_tables, $tbl_prefix){
 			// Create variables for the dump files
-			$sql_data = NULL;
+			$sql_data = null;
 
 			// Field data and entry data schemas needs to be apart of the workspace sql dump
 			$sql_data  = $dump->export('tbl_fields_%', MySQLDump::ALL);
@@ -280,7 +280,7 @@ private function __createZipArchive($config_template, $sql_schema, $sql_data){
 				$archive = new ZipArchive;
 				$res = $archive->open(TMP . '/ensemble.tmp.zip', ZipArchive::CREATE);
 
-				if ($res === TRUE) {
+				if ($res === true) {
 					$this->__addFolderToArchive($archive, 'extensions', DOCROOT);
 					$this->__addFolderToArchive($archive, 'symphony', DOCROOT);
 					$this->__addFolderToArchive($archive, 'workspace', DOCROOT);
@@ -329,7 +329,7 @@ private function __createZipArchive($config_template, $sql_schema, $sql_data){
 			}
 		}
 
-		private function __addFolderToArchive(&$archive, $path, $parent=NULL){
+		private function __addFolderToArchive(&$archive, $path, $parent = null){
 			$iterator = new DirectoryIterator($path);
 			foreach($iterator as $file){
 				if($file->isDot() || preg_match('/^\./', $file->getFilename())) continue;
@@ -338,7 +338,7 @@ private function __addFolderToArchive(&$archive, $path, $parent=NULL){
 					$this->__addFolderToArchive($archive, $file->getPathname(), $parent);
 				}
 
-				else $archive->addFile($file->getPathname(), ltrim(str_replace($parent, NULL, $file->getPathname()), '/'));
+				else $archive->addFile($file->getPathname(), ltrim(str_replace($parent, null, $file->getPathname()), '/'));
 			}
 		}
 	}
diff --git a/extension.meta.xml b/extension.meta.xml
index 566fcc1..1115624 100644
--- a/extension.meta.xml
+++ b/extension.meta.xml
@@ -18,6 +18,9 @@
 		</author>
 	</authors>
 	<releases>
+		<release version="3.0.0" date="TBA" min="4.0.0" max="4.x.x" php-min="5.6.x" php-max="7.x.x">
+			- Updated for Symphony 4.x
+		</release>
 		<release version="2.2.1" date="2016-10-06" min="2.6.0" max="2.6.x">
 			- Updated Russian translation
 		</release>
@@ -109,4 +112,4 @@
 			- Moved `installer.tpl`, found in the main S2 repository, into the /lib folder
 		</release>
 	</releases>
-</extension>
\ No newline at end of file
+</extension>
diff --git a/lib/class.mysqldump.php b/lib/class.mysqldump.php
index e0f34e9..46d6be9 100755
--- a/lib/class.mysqldump.php
+++ b/lib/class.mysqldump.php
@@ -1,36 +1,36 @@
 <?php
 
 	Class MySQLDump{
-	
+
 		const DATA_ONLY = 1;
 		const STRUCTURE_ONLY = 2;
 		const ALL = 3;
 		const CRLF = "\r\n";
 
 		private $_connection;
-	
+
 		public function __construct(MySQL $connection){
 			$this->_connection = $connection;
 		}
 
-		public function export($match=null, $flag=self::ALL, $condition=NULL){
-			$data = NULL;
+		public function export($match = null, $flag = self::ALL, $condition = null){
+			$data = null;
 
 			$tables = $this->__getTables($match);
 			foreach ($tables as $name => $info){
-			
+
 				if($flag == self::ALL || $flag == self::STRUCTURE_ONLY){
 					$data .= self::CRLF . "-- *** STRUCTURE: `{$name}` ***" . self::CRLF;
 					$data .= "DROP TABLE IF EXISTS `{$name}`;" . self::CRLF;
 					$data .= $this->__dumpTableSQL($name, $info['type'], $info['fields'], $info['indexes']);
 				}
-			
+
 				if($flag == self::ALL || $flag == self::DATA_ONLY){
 					$data .= self::CRLF . "-- *** DATA: `$name` ***" . self::CRLF;
 					if(strtoupper($info['type']) == 'INNODB'){
 						$data .= 'SET FOREIGN_KEY_CHECKS = 0;' . self::CRLF;
 					}
-				
+
 					$data .= $this->__dumpTableData ($name, $info['fields'], $condition);
 					if(strtoupper($info['type']) == 'INNODB'){
 						$data .= 'SET FOREIGN_KEY_CHECKS = 1;' . self::CRLF;
@@ -40,41 +40,41 @@ public function export($match=null, $flag=self::ALL, $condition=NULL){
 
 			return $data;
 		}
-	
-		private function __dumpTableData($name, $fields, $condition=NULL){
+
+		private function __dumpTableData($name, $fields, $condition = null){
 			$fieldList = join (', ', array_map (create_function ('$x', 'return "`$x`";'), array_keys ($fields)));
-			
+
 			$query = "SELECT {$fieldList} FROM `{$name}`";
-			
+
 			if(!is_null($condition)){
 				$query .= ' WHERE ' . $condition;
 			}
-			
+
 			$rows = $this->_connection->fetch ($query);
 
-			$value = NULL;
+			$value = null;
 
-			if(!is_array($rows) || empty($rows)) return NULL;
+			if(!is_array($rows) || empty($rows)) return null;
 
 			foreach ($rows as $row){
 				$value .= "INSERT INTO `{$name}` ({$fieldList}) VALUES (";
 				$fieldValues = array();
-			
+
 				foreach ($fields as $fieldName => $info){
 					$fieldValue = $row[$fieldName];
 
 					if($info['null'] == 1 && strlen(trim($fieldValue)) == 0){
-						$fieldValues[] = 'NULL';
+						$fieldValues[] = 'null';
 					}
-					
+
 					elseif(substr($info['type'], 0, 4) == 'enum'){
 						$fieldValues[] = "'{$fieldValue}'";
 					}
-					
+
 					elseif(is_numeric ($fieldValue)){
 						$fieldValues[] = $fieldValue;
 					}
-					
+
 					else{
 						$fieldValues[] = "'" . $this->_connection->cleanValue($fieldValue) . "'";
 					}
@@ -86,7 +86,7 @@ private function __dumpTableData($name, $fields, $condition=NULL){
 
 			return $value;
 		}
-	
+
 		private function __dumpTableSQL($table, $type, $fields, $indexes){
 
 			$query = "SHOW CREATE TABLE `{$table}`";
@@ -95,9 +95,9 @@ private function __dumpTableSQL($table, $type, $fields, $indexes){
 			return $result[1] . ";" . self::CRLF;
 		}
 
-		private function __getTables($match=null){
-			$query = 'SHOW TABLES' . (!is_null($match) ? " LIKE '$match'" : NULL);
-		
+		private function __getTables($match = null){
+			$query = 'SHOW TABLES' . (!is_null($match) ? " LIKE '$match'" : null);
+
 			$rows = $this->_connection->fetch ($query);
 			$rows = array_map (create_function ('$x', 'return array_values ($x);'), $rows);
 			$tables = array_map (create_function ('$x', 'return $x[0];'), $rows);
@@ -138,7 +138,7 @@ private function __getTableFields($table){
 					'default' => $default,
 					'extra'   => $extra
 				);
-			
+
 				$result[$name] = $field;
 			}