cleaning up code.

laravel/cache/drivers/database.php

@@ -75,7 +75,7 @@ public function put($key, $value, $minutes)
 		$expiration = $this->expiration($minutes);
 
 		// To update the value, we'll first attempt an insert against the
-		// database and if we catch an exception, we'll assume that the
+		// database and if we catch an exception we'll assume that the
 		// primary key already exists in the table and update.
 		try
 		{

laravel/cache/drivers/file.php

@@ -42,9 +42,8 @@ protected function retrieve($key)
 		if ( ! file_exists($this->path.$key)) return null;
 
 		// File based caches store have the expiration timestamp stored in
-		// UNIX format prepended to their contents. This timestamp is then
+		// UNIX format prepended to their contents. We'll compare the
-		// extracted and removed when the cache is read to determine if
+		// timestamp to the current time when we read the file.
-		// the file is still valid.
 		if (time() >= substr($cache = file_get_contents($this->path.$key), 0, 10))
 		{
 			return $this->forget($key);