set utf8mb4 as default and add possibility to set own encoding

Author: jacklul

src/DB.php

@@ -67,17 +67,18 @@ class DB
      * @param array    $credentials  Database connection details
      * @param Telegram $telegram     Telegram object to connect with this object
      * @param string   $table_prefix Table prefix
+     * @param string   $encoding     Database character encoding
      *
      * @return PDO PDO database object
      */
-    public static function initialize(array $credentials, Telegram $telegram, $table_prefix = null)
+    public static function initialize(array $credentials, Telegram $telegram, $table_prefix = null, $encoding = 'utf8mb4')
     {
         if (empty($credentials)) {
             throw new TelegramException('MySQL credentials not provided!');
         }
 
         $dsn = 'mysql:host=' . $credentials['host'] . ';dbname=' . $credentials['database'];
-        $options = [\PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8'];
+        $options = [\PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES ' . $encoding];
         try {
             $pdo = new \PDO($dsn, $credentials['user'], $credentials['password'], $options);
             $pdo->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_WARNING);

src/Telegram.php

@@ -174,9 +174,9 @@ public function __construct($api_key, $bot_name)
      *
      * @return Telegram
      */
-    public function enableMySql(array $credential, $table_prefix = null)
+    public function enableMySql(array $credential, $table_prefix = null, $encoding = 'utf8mb4')
     {
-        $this->pdo = DB::initialize($credential, $this, $table_prefix);
+        $this->pdo = DB::initialize($credential, $this, $table_prefix, $encoding);
         ConversationDB::initializeConversation();
         $this->mysql_enabled = true;
         return $this;

structure.sql

@@ -7,7 +7,7 @@ CREATE TABLE IF NOT EXISTS  `user` (
   `updated_at` timestamp NULL DEFAULT NULL COMMENT 'Entry date update',
   PRIMARY KEY (`id`),
   KEY `username` (`username`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE IF NOT EXISTS  `chat` (
   `id` bigint COMMENT 'Unique user or chat identifier',
@@ -18,7 +18,7 @@ CREATE TABLE IF NOT EXISTS  `chat` (
   `old_id` bigint DEFAULT NULL COMMENT 'Unique chat identifieri this is filled when a chat is converted to a superchat',
    PRIMARY KEY (`id`),
    KEY `old_id` (`old_id`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE IF NOT EXISTS  `user_chat` (
   `user_id` bigint COMMENT 'Unique user identifier',
@@ -28,7 +28,7 @@ CREATE TABLE IF NOT EXISTS  `user_chat` (
     ON DELETE CASCADE ON UPDATE CASCADE,
   FOREIGN KEY (`chat_id`) REFERENCES `chat` (`id`)
     ON DELETE CASCADE ON UPDATE CASCADE
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE IF NOT EXISTS `inline_query` (
   `id` bigint UNSIGNED COMMENT 'Unique identifier for this query.',
@@ -43,7 +43,7 @@ CREATE TABLE IF NOT EXISTS `inline_query` (
    FOREIGN KEY (`user_id`)
    REFERENCES `user` (`id`)
 
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE IF NOT EXISTS `chosen_inline_result` (
   `id` bigint UNSIGNED AUTO_INCREMENT COMMENT 'Unique identifier for chosen query.',
@@ -59,7 +59,7 @@ CREATE TABLE IF NOT EXISTS `chosen_inline_result` (
    FOREIGN KEY (`user_id`)
    REFERENCES `user` (`id`)
 
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE IF NOT EXISTS `callback_query` (
   `id` bigint UNSIGNED COMMENT 'Unique identifier for this query.',
@@ -74,7 +74,7 @@ CREATE TABLE IF NOT EXISTS `callback_query` (
    FOREIGN KEY (`user_id`)
    REFERENCES `user` (`id`)
 
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE IF NOT EXISTS  `message` (
   `chat_id` bigint COMMENT 'Chat identifier.',
@@ -86,7 +86,7 @@ CREATE TABLE IF NOT EXISTS  `message` (
   `forward_date` timestamp NULL DEFAULT NULL COMMENT 'For forwarded messages, date the original message was sent in Unix time',
   `reply_to_chat` bigint NULL DEFAULT NULL COMMENT 'Chat identifier.',
   `reply_to_message` bigint UNSIGNED DEFAULT NULL COMMENT 'Message is a reply to another message.',
-  `text` TEXT DEFAULT NULL COMMENT 'For text messages, the actual UTF-8 text of the message max message length 4096 char utf8',
+  `text` TEXT DEFAULT NULL COMMENT 'For text messages, the actual UTF-8 text of the message max message length 4096 char utf8mb4',
   `entities` TEXT DEFAULT NULL COMMENT 'For text messages, special entities like usernames, URLs, bot commands, etc. that appear in the text',
   `audio` TEXT DEFAULT NULL COMMENT 'Audio object. Message is an audio file, information about the file',
   `document` TEXT DEFAULT NULL COMMENT 'Document object. Message is a general file, information about the file',
@@ -129,7 +129,7 @@ CREATE TABLE IF NOT EXISTS  `message` (
   FOREIGN KEY (`new_chat_member`) REFERENCES `user` (`id`),
   FOREIGN KEY (`left_chat_member`) REFERENCES `user` (`id`)
 
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE IF NOT EXISTS `telegram_update` (
   `id` bigint UNSIGNED COMMENT 'The update\'s unique identifier.',
@@ -149,7 +149,7 @@ CREATE TABLE IF NOT EXISTS `telegram_update` (
   FOREIGN KEY (`inline_query_id`) REFERENCES `inline_query` (`id`),
   FOREIGN KEY (`chosen_inline_result_id`) REFERENCES `chosen_inline_result` (`id`),
   FOREIGN KEY (`callback_query_id`) REFERENCES `callback_query` (`id`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE IF NOT EXISTS `conversation` (
   `id` bigint(20) unsigned AUTO_INCREMENT COMMENT 'Row unique id',
@@ -170,4 +170,4 @@ CREATE TABLE IF NOT EXISTS `conversation` (
   REFERENCES `user` (`id`),
   FOREIGN KEY (`chat_id`)
   REFERENCES `chat` (`id`)
-) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
+) ENGINE=InnoDB  DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;