MYSQL Erreur : SQLSTATE[42000]: .....1604

Bonjour,

j'aimerai stocker une image dans ma base via php
voici mon code

function file_fichier(){
			     $ret = false ;
				 $img_blob='';
			      $img_weight=0;
				  $img_type='';
			      $img_name='';
				 $max_weight=250000;
			$ret=is_uploaded_file($_FILES['sbphoto']['tmp_name']);
			if(!$ret){
			         echo "le fichier n'a pas pu etre transferé";
					 return false;
			}
			else{
			$img_weight=$_FILES['sbphoto']['size'];
			if($img_weight>$max_weight){
			echo "votre fichier ne peut depasser plus de 250 ko";
			return false;
			}
			$img_type=$_FILES['sbphoto']['type'];
			$img_name=$_FILES['sbphoto']['name'];
			$img_blob= file_get_contents($_FILES['sbphoto']['tmp_name']);
			try{
          $pdo_options[PDO::ATTR_ERRMODE] = PDO::ERRMODE_EXCEPTION;
		 $bddp = new PDO('mysql:host=localhost;dbname=sbdb', 'root', '',$pdo_options); 	
  $bddp->exec("INSERT INTO image(img_name,img_weight,img_type,img_blob) VALUES('$img_name','$img_weight' ,'$img_type', 'addslashes $img_blob')");
 }
           catch(exCeption $e){
 die('Erreur : '.$e->getMessage());
 }
     }
	 }
	 

je recoi tjr l'erreur
Erreur : SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1


l