cleaning up code.

laravel/database/connectors/mysql.php

@@ -12,24 +12,26 @@ class MySQL extends Connector {
 	{
 		extract($config);
 
-		// Format the initial MySQL PDO connection string. These options are required
-		// for every MySQL connection that is established. The connection strings
-		// have the following convention: "mysql:host=hostname;dbname=database"
 		$dsn = "mysql:host={$host};dbname={$database}";
 
-		// Check for any optional MySQL PDO options. These options are not required
-		// to establish a PDO connection; however, may be needed in certain server
-		// or hosting environments used by the developer.
-		foreach (array('port', 'unix_socket') as $key)
+		// The developer has the freedom of specifying a port for the MySQL database
+		// or the default port (3306) will be used to make the connection by PDO.
+		// The Unix socket may also be specified if necessary.
+		if (isset($config['port']))
 		{
-			if (isset($config[$key]))
-			{
-				$dsn .= ";{$key}={$config[$key]}";
+			$dsn .= ";port={$config['port']}";
 		}
+
+		if (isset($config['unix_socket']))
+		{
+			$dsn .= ";unix_socket={$config['unix_socket']}";
 		}
 
 		$connection = new PDO($dsn, $username, $password, $this->options($config));
 
+		// If a character set has been specified, we'll execute a query against
+		// the database to set the correct character set. By default, this is
+		// set to UTF-8 which should be fine for most scenarios.
 		if (isset($config['charset']))
 		{
 			$connection->prepare("SET NAMES '{$config['charset']}'")->execute();

laravel/database/connectors/postgres.php

@@ -12,24 +12,21 @@ class Postgres extends Connector {
 	{
 		extract($config);
 
-		// Format the initial Postgres PDO connection string. These options are required
-		// for every Postgres connection that is established. The connection strings
-		// have the following convention: "pgsql:host=hostname;dbname=database"
 		$dsn = "pgsql:host={$host};dbname={$database}";
 
-		// Check for any optional Postgres PDO options. These options are not required
-		// to establish a PDO connection; however, may be needed in certain server
-		// or hosting environments used by the developer.
-		foreach (array('port') as $key => $value)
+		// The developer has the freedom of specifying a port for the PostgresSQL
+		// database or the default port (5432) will be used by PDO to create the
+		// connection to the database for the developer.
+		if (isset($config['port']))
 		{
-			if (isset($config[$key]))
-			{
-				$dsn .= ";{$key}={$value}";
-			}
+			$dsn .= ";port={$config['port']}";
 		}
 
 		$connection = new PDO($dsn, $username, $password, $this->options($config));
 
+		// If a character set has been specified, we'll execute a query against
+		// the database to set the correct character set. By default, this is
+		// set to UTF-8 which should be fine for most scenarios.
 		if (isset($config['charset']))
 		{
 			$connection->prepare("SET NAMES '{$config['charset']}'")->execute();

laravel/database/connectors/sqlserver.php

@@ -26,8 +26,7 @@ class SQLServer extends Connector {
 
 		// Format the SQL Server connection string. This connection string format can
 		// also be used to connect to Azure SQL Server databases. The port is defined
-		// directly after the server name, so we'll create that and then create the
-		// final DSN string to pass to PDO.
+		// directly after the server name, so we'll create that first.
 		$port = (isset($port)) ? ','.$port : '';
 
 		$dsn = "sqlsrv:Server={$host}{$port};Database={$database}";

laravel/database/grammar.php

@@ -59,7 +59,10 @@ abstract class Grammar {
 		// Expressions should be injected into the query as raw strings so
 		// so we do not want to wrap them in any way. We will just return
 		// the string value from the expression to be included.
-		if ($value instanceof Expression) return $value->get();
+		if ($value instanceof Expression)
+		{
+			return $value->get();
+		}
 
 		// If the value being wrapped contains a column alias, we need to
 		// wrap it a little differently as each segment must be wrapped

laravel/database/query.php

@@ -150,7 +150,7 @@ class Query {
 	{
 		// If the "column" is really an instance of a Closure, the developer is
 		// trying to create a join with a complex "ON" clause. So, we will add
-		// the join, and then call the Closure with the join.
+		// the join, and then call the Closure with the join/
 		if ($column1 instanceof Closure)
 		{
 			$this->joins[] = new Query\Join($type, $table);
@@ -435,7 +435,7 @@ class Query {
 		//
 		// The index variable helps us get the correct parameter value
 		// for the where condition. We increment it each time we add
-		// a condition to the query.
+		// a condition to the query's where.
 		$connector = 'AND';
 
 		$index = 0;