Added proper cache::forever implementations to each driver.

Signed-off-by: Taylor Otwell <taylorotwell@gmail.com>

laravel/cache/drivers/apc.php

@@ -63,6 +63,18 @@ class APC extends Driver {
 		apc_store($this->key.$key, $value, $minutes * 60);
 	}
 
+	/**
+	 * Write an item to the cache that lasts forever.
+	 *
+	 * @param  string  $key
+	 * @param  mixed   $value
+	 * @return void
+	 */
+	public function forever($key, $value)
+	{
+		return $this->put($key, $value, 0);
+	}
+
 	/**
 	 * Delete an item from the cache.
 	 *

laravel/cache/drivers/database.php

@@ -87,6 +87,18 @@ class Database extends Driver {
 		}
 	}
 
+	/**
+	 * Write an item to the cache for five years.
+	 *
+	 * @param  string  $key
+	 * @param  mixed   $value
+	 * @return void
+	 */
+	public function forever($key, $value)
+	{
+		return $this->put($key, $value, 2628000);
+	}
+
 	/**
 	 * Delete an item from the cache.
 	 *

laravel/cache/drivers/driver.php

@@ -53,18 +53,6 @@ abstract class Driver {
 	 */
 	abstract public function put($key, $value, $minutes);
 
-	/**
-	 * Write an item to the cache for five years.
-	 *
-	 * @param  string  $key
-	 * @param  mixed   $value
-	 * @return void
-	 */
-	public function forever($key, $value)
-	{
-		return $this->put($key, $value, 2628000);
-	}
-
 	/**
 	 * Get an item from the cache, or cache and return the default value.
 	 *

laravel/cache/drivers/file.php

@@ -73,6 +73,18 @@ class File extends Driver {
 		file_put_contents($this->path.$key, $value, LOCK_EX);
 	}
 
+	/**
+	 * Write an item to the cache for five years.
+	 *
+	 * @param  string  $key
+	 * @param  mixed   $value
+	 * @return void
+	 */
+	public function forever($key, $value)
+	{
+		return $this->put($key, $value, 2628000);
+	}
+
 	/**
 	 * Delete an item from the cache.
 	 *

laravel/cache/drivers/memcached.php

@@ -71,6 +71,18 @@ class Memcached extends Driver {
 		$this->memcache->set($this->key.$key, $value, 0, $minutes * 60);
 	}
 
+	/**
+	 * Write an item to the cache that lasts forever.
+	 *
+	 * @param  string  $key
+	 * @param  mixed   $value
+	 * @return void
+	 */
+	public function forever($key, $value)
+	{
+		return $this->put($key, $value, 0);
+	}
+
 	/**
 	 * Delete an item from the cache.
 	 *

laravel/cache/drivers/redis.php

@@ -60,11 +60,23 @@ class Redis extends Driver {
 	 */
 	public function put($key, $value, $minutes)
 	{
-		$this->redis->set($key, serialize($value));
+		$this->forever($key, $value);
 
 		$this->redis->expire($key, $minutes * 60);
 	}
 
+	/**
+	 * Write an item to the cache that lasts forever.
+	 *
+	 * @param  string  $key
+	 * @param  mixed   $value
+	 * @return void
+	 */
+	public function forever($key, $value)
+	{
+		$this->redis->set($key, serialize($value));
+	}
+
 	/**
 	 * Delete an item from the cache.
 	 *