Merge branch 'hotfix/ttl_return' into develop

Author: michael-grunder

README.markdown

@@ -1124,13 +1124,13 @@ var_dump($redis->sort('s', array('sort' => 'desc', 'store' => 'out'))); // (int)
 
 ### ttl, pttl
 -----
-_**Description**_: Returns the time to live left for a given key, in seconds. If the key doesn't exist, `FALSE` is returned. pttl returns a time in milliseconds.
+_**Description**_: Returns the time to live left for a given key in seconds (ttl), or milliseconds (pttl).
 
 ##### *Parameters*
 *Key*: key
 
 ##### *Return value*
-Long, the time left to live in seconds.
+*LONG*:  The time to live in seconds.  If the key has no ttl, `-1` will be returned, and `-2` if the key doesn't exist.
 
 ##### *Example*
 ~~~

tests/TestRedis.php

@@ -1626,18 +1626,26 @@ public function testlGetRange() {
 //    }
 
     public function testdbSize() {
-	$this->assertTrue($this->redis->flushDB());
-	$this->redis->set('x', 'y');
-	$this->assertTrue($this->redis->dbSize() === 1);
+        $this->assertTrue($this->redis->flushDB());
+        $this->redis->set('x', 'y');
+        $this->assertTrue($this->redis->dbSize() === 1);
     }
 
     public function testttl() {
-	$this->redis->set('x', 'y');
-	$this->redis->setTimeout('x', 5);
-	for($i = 5; $i > 0; $i--) {
-		$this->assertEquals($i, $this->redis->ttl('x'));
-		sleep(1);
-	}
+        $this->redis->set('x', 'y');
+        $this->redis->setTimeout('x', 5);
+        for($i = 5; $i > 0; $i--) {
+            $this->assertEquals($i, $this->redis->ttl('x'));
+            sleep(1);
+        }
+
+        // A key with no TTL
+        $this->redis->del('x'); $this->redis->set('x', 'bar');
+        $this->assertEquals($this->redis->ttl('x'), -1);
+
+        // A key that doesn't exist
+        $this->redis->del('x');
+        $this->assertEquals($this->redis->ttl('x'), -2);
     }
 
     public function testPersist() {