How to make update function using pdo oop

 Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY093]: Invalid parameter number: parameter was not defined' on line 25
 

any one can help please?


function update($table,$data,$id){

 	global $conn;

  $resultstr = array();

  foreach ($data as $keys => $value) {

 	$resultstr[] = $keys."=:".$keys;


  }
 	
  $values = implode(",",$resultstr);

   $sql ="Update ".$table." SET ".$values."WHERE id=:id";

   
   
   $query =  $conn->prepare($sql);

   $query->bindParam(':id',$id);

   foreach($data as $key=>$val){
        $query->bindValue(':'.$key,$val);
        
    }
    $updateData = $query->execute();
     
   
   
   return $updateData;

 }