使用codeigniter将复选框值传递给数据库，然后将错误Occured传递给数据库

Question

Parsing Error
Message: syntax error, unexpected ';', expecting ')'
Filename: models/Register_model.php
Line Number: 23

$skills = $this->input->post('skills[]');
$data = array(
  'skills' => implode(",", $skills); line nos:23
);  

$insert_id=$this->db->insert("regi_user",$data);  
return $insert_id;