Correct typos and minor code styling.

src/Conversation.php

@@ -49,7 +49,7 @@ class Conversation
     protected $user_id;
 
     /**
-     * Telegram chat_id
+     * Telegram chat id
      *
      * @var int
      */
@@ -59,23 +59,23 @@ class Conversation
      * Group name let you share the session among commands
      * Call this as the same name of the command if you don't need to share the conversation
      *
-     * @var strint
+     * @var string
      */
     protected $group_name;
 
     /**
-     * Command to be execute if the conversation is active
+     * Command to be executed if the conversation is active
      *
      * @var string
      */
     protected $command;
 
     /**
-     * Conversation contructor initialize a new conversation
+     * Conversation contructor to initialize a new conversation
      *
      * @param int    $user_id
      * @param int    $chat_id
-     * @param string $name
+     * @param string $group_name
      * @param string $command
      */
     public function __construct($user_id, $chat_id, $group_name = null, $command = null)
@@ -91,7 +91,7 @@ class Conversation
     }
 
     /**
-     * Check if the conversation already exist
+     * Check if the conversation already exists
      *
      * @return bool
      */
@@ -101,7 +101,7 @@ class Conversation
         if ($this->is_fetched) {
             return true;
         }
-        //select an active conversation
+        //Select an active conversation
         $conversation = ConversationDB::selectConversation($this->user_id, $this->chat_id, 1);
         $this->is_fetched = true;
 
@@ -114,13 +114,13 @@ class Conversation
                 return true;
             }
 
-            //a track with the same name was already opened, store the data inside the class
+            //A conversation with the same name was already opened, store the data inside the class
             if ($this->conversation['conversation_name'] == $this->group_name) {
                 $this->data = json_decode($this->conversation['data'], true);
                 return true;
             }
 
-            //a conversation  with a differet name has been opened unsetting the DB one and reacreatea a new one
+            //A conversation with a different name has been opened, unset the DB one and recreate a new one
             ConversationDB::updateConversation(['status' => 'cancelled'], ['chat_id' => $this->chat_id, 'user_id' => $this->user_id, 'status' => 'active']);
             return false;
         }
@@ -130,9 +130,7 @@ class Conversation
     }
 
     /**
-     * Check if the Conversation already exist
-     *
-     * Check if a conversation has already been created in the database. If the conversation is not found, a new conversation is created. start fetch the data stored in the database
+     * Check if a conversation has already been created in the database. If the conversation is not found, a new conversation is created. Start fetches the data stored in the database.
      *
      * @return bool
      */
@@ -148,11 +146,13 @@ class Conversation
     /**
      * Store the array/variable in the database with json_encode() function
      *
+     * @todo Verify the query before assigning the $data member variable
+     *
      * @param array $data
      */
     public function update($data)
     {
-        //conversation must exist!
+        //Conversation must exist!
         if ($this->conversationExist()) {
             $fields['data'] = json_encode($data);
 
@@ -165,11 +165,9 @@ class Conversation
     /**
      * Delete the conversation from the database
      *
-     * Currently the Convevrsation is not deleted but just unsetted
+     * Currently the Conversation is not deleted but just set to 'stopped'
      *
-     * @TODO should return something
-     *
-     * @param array $data
+     * @todo should return something
      */
     public function stop()
     {
@@ -181,7 +179,7 @@ class Conversation
     /**
      * Retrieve the command to execute from the conversation
      *
-     * @param string
+     * @return string|null
      */
     public function getConversationCommand()
     {
@@ -192,9 +190,9 @@ class Conversation
     }
 
     /**
-     * Retrive the data store in the conversation
+     * Retrieve the data stored in the conversation
      *
-     * @param array $data
+     * @return array
      */
     public function getData()
     {

src/ConversationDB.php

@@ -28,13 +28,13 @@ class ConversationDB extends DB
     }
 
     /**
-     * Conversation contructor initialize a new conversation
+     * Select a conversation from the DB
      *
      * @param int  $user_id
      * @param int  $chat_id
      * @param bool $limit
      *
-     * @return array
+     * @return array|bool
      */
     public static function selectConversation($user_id, $chat_id, $limit = null)
     {
@@ -50,7 +50,7 @@ class ConversationDB extends DB
 
             $tokens = [':chat_id' => $chat_id, ':user_id' => $user_id];
             if (!is_null($limit)) {
-                $query .=' LIMIT :limit';
+                $query .= ' LIMIT :limit';
             }
             $sth = self::$pdo->prepare($query);
 
@@ -73,7 +73,7 @@ class ConversationDB extends DB
      * Insert the conversation in the database
      *
      * @param string $conversation_command
-     * @param string $conversation_name
+     * @param string $conversation_group_name
      * @param int    $user_id
      * @param int    $chat_id
      *
@@ -127,13 +127,13 @@ class ConversationDB extends DB
     }
 
     /**
-     * Insert the conversation in the database
+     * Update the conversation in the database
      *
      * @param string $table
      * @param array  $fields_values
      * @param array  $where_fields_values
      *
-     * @todo this function is generic should be moved in DB.php
+     * @todo This function is generic should be moved in DB.php
      *
      * @return bool
      */
@@ -156,8 +156,8 @@ class ConversationDB extends DB
             }
             ++$a;
             ++$tokens_counter;
-            $update .= '`'.$field.'` = :'.$tokens_counter;
-            $tokens[':'.$tokens_counter] = $value;
+            $update .= '`' . $field . '` = :' . $tokens_counter;
+            $tokens[':' . $tokens_counter] = $value;
         }
 
         //Where
@@ -171,11 +171,11 @@ class ConversationDB extends DB
                 $where .= 'WHERE ';
             }
             ++$tokens_counter;
-            $where  .= '`'.$field .'`= :'.$tokens_counter ;
-            $tokens[':'.$tokens_counter] = $value;
+            $where .= '`' . $field .'`= :' . $tokens_counter ;
+            $tokens[':' . $tokens_counter] = $value;
         }
 
-        $query = 'UPDATE `'.$table.'` SET '.$update.' '.$where;
+        $query = 'UPDATE `' . $table . '` SET ' . $update . ' ' . $where;
         try {
             $sth = self::$pdo->prepare($query);
             $status = $sth->execute($tokens);