Codeigniter: post is not working in form - php

Question

I am uploading images to "images" directory and some info to my database in codeigniter. But when I click to submit button after completing form, It posts nothing. It gives error that there is not posted any input(not the same as error message just meaning). If someone could please look over this code, and tell me why it's not working. Thank you in advance. Here my controller code:
<?php
public function create()
{
// image1
$ImageName = $_FILES['image']['name'];
$imageSize= $_FILES['image']['size'];
$imageSource = $_FILES['image']['tmp_name'];
move_uploaded_file($_FILES['image']['tmp_name'], "images/$ImageName");
$this->create_thumb($ImageName);
$this->compress($ImageName, $imageSize, "images/$ImageName");
// image2
if ($this->input->post('image2'))
{
$ImageName2 = $_FILES['image2']['name'];
$imageSize2= $_FILES['image2']['size'];
$imageSource2 = $_FILES['image2']['tmp_name'];
$this->compress($ImageName2, $imageSize2, $imageSource2);
}
// image3
if ($this->input->post('image3'))
{
$ImageName3 = $_FILES['image3']['name'];
$imageSize3= $_FILES['image3']['size'];
$imageSource3 = $_FILES['image3']['tmp_name'];
$this->compress($ImageName3, $imageSize3, $imageSource3);
}
// image4
if ($this->input->post('image4'))
{
$ImageName4 = $_FILES['image4']['name'];
$imageSize4= $_FILES['image4']['size'];
$imageSource4 = $_FILES['image4']['tmp_name'];
$this->compress($ImageName4, $imageSize4, $imageSource4);
}
$this->news_model->set_news();
$this->load->view('News/success');
}
?>
Here my view code:
<div class="content">
<div class="container-fluid">
<div class="row">
<div class="col-md-12">
<div class="card">
<div class="content">
<form action="<?php echo base_url();?>index.php/news/create/" enctype="multipart/form-data" method="post" accept-charset="utf-8">
<div class="row">
<div class="col-md-8">
<div class="form-group">
<label>Сарлавха:</label>
<input type="text" name="title" class="form-control" placeholder="Сарлавха">
</div>
</div>
<div class="col-md-4">
<div class="form-group">
<label>Автомобил тури:</label>
<select name="category" class="form-control">
<option value="yuk">Юк</option>
<option value="kichik">Кичик тижорат</option>
<option value="yengil">Енгил</option>
<option value="maxsus">Махсус техника</option>
<option value="tyagach">Тягач</option>
<option value="prisep">Прицеп</option>
</select>
</div>
</div>
</div>
<div class="row">
<div class="col-md-4">
<div class="form-group">
<label>Нархи:</label>
<input type="number" name="price" class="form-control" placeholder="Нархи">
</div>
</div>
<div class="col-md-8">
<div class="form-group">
<label>Исми ва шарифи:</label>
<input type="text" name="name" class="form-control" placeholder="Исми ва шарифи">
</div>
</div>
</div>
<div class="row">
<div class="col-md-4">
<div class="form-group">
<label>Телефон рақам:</label>
<input type="text" name="telno" class="form-control" value="+998" placeholder="Телефон рақам">
</div>
</div>
<div class="col-md-8">
<div class="form-group">
<label>Жойи:</label>
<select name="location" class="form-control">
<option value="Қорақалпоғистон Республикаси">Қорақалпоғистон Республикаси</option>
<option value="Бухоро вилояти">Бухоро вилояти</option>
<option value="Жиззах вилояти">Жиззах вилояти</option>
<option value="Қашқадарё вилояти">Қашқадарё вилояти</option>
<option value="Навоий вилояти">Навоий вилояти</option>
<option value="Наманган вилояти">Наманган вилояти</option>
<option value="Сурхондарё вилояти">Сурхондарё вилояти</option>
<option value="Сирдарё вилояти">Сирдарё вилояти</option>
<option value="Тошкент вилояти">Тошкент вилояти</option>
<option value="Фарғона вилояти">Фарғона вилояти</option>
<option value="Хоразм вилояти">Хоразм вилояти</option>
<option value="Тошкент шаҳар">Тошкент шаҳар</option>
</select>
</div>
</div>
</div>
<div class="row">
<div class="col-md-12">
<div class="form-group">
<label>Қўшимча маълумот:</label>
<textarea rows="5" name="info" class="form-control" placeholder="Қўшимча маълумот" ></textarea>
</div>
</div>
</div>
<div class="row">
<div class="col-md-6">
<div class="form-group">
<label>Асосий расмни танланг:</label>
<input type="file" name='image' class="form-control" accept="image/*" >
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label>Қўшимча расмни танланг:</label>
<input type="file" name='image2' class="form-control" accept="image/*" >
</div>
</div>
</div>
<div class="row">
<div class="col-md-6">
<div class="form-group">
<label>Қўшимча расмни танланг:</label>
<input type="file" name='image3' class="form-control" accept="image/*" >
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label>Қўшимча расмни танланг:</label>
<input type="file" name='image4' class="form-control" accept="image/*" >
</div>
</div>
</div>
<button type="submit" class="btn btn-info btn-fill pull-right" name="submit" value="submit">Юклаш</button>
<div class="clearfix" ></div>
</form>
</div>
</div>
</div>
</div>
</div>
</div>

Answer 1

Try this for debug first check $_FILES having any data.
print_r($_FILES);
If it has any data then trying to change condition like. Instead
if ($this->input->post('image2')){
Use following
if( isset( $_FILES['image']['name']) and $_FILES['image']['name'] != '' ) {
// Your code
}

Answer 2

Your Controller Should Be Like This
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Controller_name extends CI_Controller{
public function __construct(){
parent::__construct();
$this->load->model('your_model');
$this->load->library('upload');
}
public function function_name(){
if($this->input->post('submit')){
/* Your Function */
}
OR Use
if($_POST){
/* Your Function */
}
$this->load->view('News/success');
}
Controller Name Should Be Start From Capital Letter

Answer 3

The if ($this->input->post('image3')){ /* ... */ } is wrong. PHP will not see uploaded files.Check them as : if (array_key_exists($_FILES, 'image3')){ /* ... */ }