Dies ist mein Code, mein Foto kann nicht in die Datenbank eingefügt werden.

Eigentlich möchte ich eine Online-Prüfung mit dem Codeigniter machen. Ich möchte die Frage mit dem Bild hochladen. Aber als ich versuchte, das Bild hochzuladen, funktionierte der Code nicht.

aber die Frage wurde erfolgreich in die Datenbank eingefügt. Nur das Bild konnte nicht hochgeladen werden

Regler

function insert(){
		$nama_asli = $_FILES['userfile']['name'];
		$config ['file_name'] = $nama_asli;
		$config ['upload_path'] = './images';
		$config ['allowed_types'] = 'gif|jpg|png|jpeg';
		$config ['max_size'] = '2500';
			
		$this->load->library('upload', $config);
			
		$upload_data = $this->upload->data();
		$file_name = $upload_data['file_name'];	
		
		$id_soal = '';
		$soal = $_POST['soal'];
		$a = $_POST['a'];
		$b = $_POST['b'];
		$c = $_POST['c'];
		$d = $_POST['d'];
		$kunci = $_POST['kunci'];
		$status = $_POST['status'];

		$data = array(
			'id_soal' => $id_soal,
			'soal' => $soal,
			'a' => $a,
			'b' => $b,
			'c' => $c,
			'd' => $d,
			'kunci' => $kunci,
			'status' => $status,
			'foto' => $file_name,
			);

		$hasil = $this->soal_model->Simpan('soal', $data);

		if($hasil>=1){
			redirect('dashboard/index', $data);
		}
	}

Modell

class Soal_model extends Ci_Model {

  public function Ambil($where= "") {
    $data = $this->db->query('select * from soal '.$where);
    return $data;
  }
  
  public function Simpan($tabel, $data){
    $res = $this->db->insert($tabel, $data);
    return $res;
  }

Aussicht

<form role="form" action="<?php echo base_url(); ?>dashboard/insert" method="POST" enctype="multipart/form-data">
<form class="form-horizontal" method="post" style = "margin : 10px;">
		<div class = "row">
		<div class = "col-sm-offset-3 col-sm-6">
		<div class="form-group">
		<label>Soal :</label>
		<textarea type="text" class="form-control" name="soal" id="soal" required></textarea>
		</div>
		
		<div class="form-group">
		<label>Jawaban A :</label>
		<input type="text" class="form-control" 
		placeholder="Type Here" name="a" id="a" required/>
		</div>
		
		<div class="form-group">
		<label>Jawaban B :</label>
		<input type="text" class="form-control" 
		placeholder="Type Here" name="b" id="b" required/>
		</div>
		
		<div class="form-group">
		<label>Jawaban C :</label>
		<input type="text" class="form-control" 
		placeholder="Type Here" name="c" id="c" required/>
		</div>
		
		<div class="form-group">
		<label>Jawaban D :</label>
		<input type="text" class="form-control" 
		placeholder="Type Here" name="d" id="d" required/>
		</div>
		
		<div class="form-group">	
		<label>Kunci :</label>
		<select name="kunci" id="kunci" class="form-control">
		<option>Select</option> 
		<option>A</option>  
		<option>B</option> 
		<option>C</option>
		<option>D</option>
		</select> 
		</div>
		
		<div class="form-group">	
		<label>Status :</label>
		<select name="status" id="status" class="form-control">
		<option value="">Select</option> 
		<option value="tampil">Tampil</option>  
		<option value="tidak">Tidak</option> 
		</select> 
		
		<div class="form-group">	
		<label>Photo :</label>
		<input type="file" name="foto" id="foto" size="20"/>
		</div>
		<br>
		
		<div class="form-group">	
        <button type="submit" class="btn btn-default">Simpan</button>
		<button type="reset" class="btn btn-default">Hapus</button>
		</div>
		</div>
		</div>
	</form>
	

Datenbank