阿拉伯字符不会被添加到pdo中。

我有一个能够很好地处理英文的pdo类，但是当我尝试插入阿拉伯文本时，它的效果不好。

这是这个类：

class DB extends config
{
    protected $pdo;
    private $sQuery;
    private $bConnected = false;
    private $log;
    private $parameters;
    protected $table;
    protected $values;
    
    public function __construct($table)
    { 
        parent::__construct();
        $this->log = new Log(); 
        $this->Connect();
        $this->parameters = array();
        $this->table = $table;
    }
    
    private function Connect()
    {
        $dsn = 'mysql:dbname='.$this->settings["dbname"].';host='.$this->settings["host"];
        try 
        {
            $this->pdo = new PDO($dsn, $this->settings["user"], $this->settings["password"], array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8"));
            $this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
            $this->pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
            $this->bConnected = true;
        }
        catch (PDOException $e) 
        {
            echo $this->ExceptionLog($e->getMessage());
            die();
        }
    }
    public function CloseConnection()
    {
        $this->pdo = null;
    }
    
    private function Init($query,$parameters = "")
    {
        if(!$this->bConnected) { $this->Connect(); }
        try {
            $this->sQuery = $this->pdo->prepare($query);
            $this->bindMore($parameters);
            if(!empty($this->parameters)) {
                foreach($this->parameters as $param)
                {
                    $parameters = explode("\x7F",$param);
                    $this->sQuery->bindParam($parameters[0],$parameters[1]);
                }       
            }
            $this->succes   = $this->sQuery->execute();     
        }
        catch(PDOException $e)
        {
            echo $this->ExceptionLog($e->getMessage(), $query );
            die();
        }
        $this->parameters = array();
    }
    
    public function bind($para, $value)
    {   
        $this->parameters[sizeof($this->parameters)] = ":" . $para . "\x7F" . utf8_encode($value);
    }
    
    public function bindMore($parray)
    {
        if(empty($this->parameters) && is_array($parray)) {
            $columns = array_keys($parray);
            foreach($columns as $i => &$column) {
                $this->bind($column, $parray[$column]);
            }
        }
    }
    
    public function query($query,$params = null, $fetchmode = PDO::FETCH_ASSOC)
    {
        $query = trim($query);
        $this->Init($query,$params);
        $rawStatement = explode(" ", $query);
        $statement = strtolower($rawStatement[0]);
        if ($statement === 'select' || $statement === 'show') {
            return $this->sQuery->fetchAll($fetchmode);
        }
        elseif ( $statement === 'insert' ||  $statement === 'update' || $statement === 'delete' ) {
            return $this->sQuery->rowCount();   
        }   
        else {
            return NULL;
        }
    }
    
    public function lastInsertId() {
        return $this->pdo->lastInsertId();
    }   
    
    public function column($query,$params = null)
    {
        $this->Init($query,$params);
        $Columns = $this->sQuery->fetchAll(PDO::FETCH_NUM);     
        $column = null;
        foreach($Columns as $cells) {
            $column[] = $cells[0];
        }
        return $column;
    }   
    
    public function row($query,$params = null,$fetchmode = PDO::FETCH_ASSOC)
    {               
        $this->Init($query,$params);
        return $this->sQuery->fetch($fetchmode);            
    }
    
    public function single($query,$params = null)
    {
        $this->Init($query,$params);
        return $this->sQuery->fetchColumn();
    }
    
    private function ExceptionLog($message , $sql = "")
    {
        $exception  = 'Unhandled Exception. ';
        $exception .= $message;
        $exception .= " You can find the error back in the log.";
        if(!empty($sql)) {
            $message .= "\r\nRaw SQL : "  . $sql;
        }
        $this->log->write($message);
        return $exception;
    }
    
    public function binding($values = array()){
        foreach($values as $key => $value){
            $this->bind($key,$value);
            $this->values[$key] = $value;
        }
    }
    
    public function add($where = NULL){
        $sql = "INSERT INTO {$this->table} (";
        $i=0;
        foreach($this->values as $key => $value){
            if($i+1 == count($this->values))
            {
                $sql.= $key;
            }  
            else 
            {
                $sql.= $key.',';
            }
            $i++;
        }
        $sql .= ') values (';
        $i=0;
        foreach($this->values as $key => $value){
            if($i+1 == count($this->values))
            {
                $sql.= ":{$key}";
            }  
            else 
            {
                $sql.= ":{$key},";
            }
            $i++;
        }
        $sql .= ')';
        if(!empty($where)){
            $sql+=$where;
        }
        $query = $this->query($sql);
        return $query;
    }
    
    public function delete($id){
        $sql = "DELETE FROM {$this->table} WHERE id = :id";
        $this->bind("id",$id);
        $query = $this->query($sql);
        return $query;
    }
    
    public function update($where){
        $sql= "UPDATE {$this->table} SET";
        $i=0;
        foreach($this->values as $key => $value){
            if($i == count($this->values))
            {
                $sql.= "{$key} = ':{$key}'";
            }  
            else 
            {
                $sql.= "{$key} = ':{$key}',";
            }
            $i++;
        }
        $sql .= $where;
        $query = $this->query($sql);
        return $query;
    }
}

当我这样使用它时：

include_once './includes/int.php';
$db = new Db("test");
$db->binding(array(
    "test" => "ابلابا"
));
$add = $db->add();
print_r( $db->row("select * from test where id = 5"));

它给我这个结果：

Array ( [id] => 5 [test] => ابÙابا ) 

我在phpMyadmin中设置了列的字符集为utf8mb4_unicode_ci。

编辑：

我的表的字符集是utf8_unicode_ci。

编辑2：

我已经检查了这个问题https://stackoverflow.com/questions/279170/utf-8-all-the-way-through，但我已经都完成了。

编辑3：

    
        
        
    
    
binding(array(
    "test" => "ابلابا"
));
$add = $db->add();
print_r( $db->row("select * from test where id = 12"));
?>
    

仍然不起作用。