[UPD]: modif for pull request

Author: Bruno

src/client.php

@@ -33,7 +33,7 @@ public function textRequest($text, $options=null)
   {
     if ($options === null) {
       $token = $this->token;
-    } else if ($options['token']) {
+    } else if (array_key_exists($options, 'token')) {
       $token = $options['token'];
     }
 
@@ -96,7 +96,7 @@ public  function fileRequest($file, $options=null)
   {
     if ($options === null) {
       $token = $this->token;
-    } else if ($options['token']) {
+    } else if (array_key_exists($options, 'token')) {
       $token = $options['token'];
     }
 

src/conversation.php

@@ -39,43 +39,31 @@ public function replies() {
   * @return {String}: the concatenation of the replies
   */
   public function joinedReplies($separator=' ') {
-    if ($this->replies) {
-      return (join($separator, $this->replies));
-    }
-
-    return (null);
+    return ($this->replies ? join($separator, $this->replies) : null)
   }
 
   /**
   * Returns all the action whose name matches the parameter
   * @return {Array}: returns an array of action, or null
   */
   public function action() {
-    if ($this->action) {
-      return ($this->action || null);
-    }
+    return ($this->action || null);
   }
 
   /**
   * Returns the first nextActions whose name matches the parameter
   * @return {Array}: returns an array of first nextActions, or null
   */
   public function nextAction() {
-    if ($this->nextActions) {
-      return ($this->nextActions[0]);
-    }
-
-    return (null);
+    return (count($this->nextAction) > 0 ? $this->nextAction[0] : []);
   }
 
   /**
   * Returns all nextActions
   * @return {Array}: returns an array of nextActions, or null
   */
   public function nextActions() {
-    if ($this->nextActions) {
-      return ($this->nextActions || $res = []);
-    }
+      return ($this->nextActions || []);
   }
 
   /**
@@ -86,7 +74,7 @@ public function nextActions() {
   public function memory($name=null) {
     if ($name === null) {
       return ($this->memory);
-    } else if ($this->memory->$name) {
+    } else if (array_key_exists($this->memory, $name)) {
       return ($this->memory->$name);
     } else {
       return (null);