Insert_batch Error Codeigniter 3.1.4 - php

Question

A PHP Error was encountered
Severity: Notice
Message: Array to string conversion
Filename: database/DB_query_builder.php
Line Number: 1539
Backtrace: File: D:\xampp\htdocs\visio\application\models\projectmodel.php
Line: 56
Function: insert_batch
A Database Error Occurred
Error Number: 1064
You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'Array' at line 1
INSERT INTO paymentsize () VALUES ('8'), ('2017-06-07'), ('Residential'), ('L'), ('120'), ('200'), ('10000'), ('15000'), ('30'), ('12000'), ('40'), ('1000'), ('60'), ('125000'), ('10'), ('10000'), ('15000'), ('20000'), Array
Filename: D:/xampp/htdocs/visio/system/database/DB_driver.php
Line Number: 691
My Controller is:
public function store_payment()
{
$post = array();
$post = $this->input->post(NULL,TRUE);
$count=count($this->input->post('pro_id'));
echo CI_VERSION;
for($i = 0; $i < $count; $i++){
$post []= array(
'pro_id' => $post['pro_id'][$i],
'date_add' => $post['date_add'][$i],
'category' => $post['category'][$i],
'type' => $post['type'][$i],
'size' => $post['size'][$i],
'counts' => $post['counts'][$i],
'booking' => $post['booking'][$i],
'confirmation' => $post['confirmation'][$i],
'confirm_days' => $post['confirm_days'][$i],
'allocation' => $post['allocation'][$i],
'allocate_days' => $post['allocate_days'][$i],
'm_installment' => $post['m_installment'][$i],
'month' => $post['month'][$i],
'y_instalment' => $post['y_instalment'][$i],
'halfyear' => $post['halfyear'][$i],
'leveling' => $post['leveling'][$i],
'demarcation' => $post['demarcation'][$i],
'possession' => $post['possession'][$i]
);
}
$this->projects->add_payment($post);
}
My Model is:
public function add_payment($array)
{
// echo "<pre>";
// print_r($array);
// exit();
return $this->db->insert_batch('paymentsize',$array);
}
My View is:
<tbody>
<input type="hidden" name="pro_id[]" value="<?= $project->pro_id; ?>" >
<tr>
<td width="14%">
<div class="col-lg-10">
<div class="form-group form-black label-floating is-empty">
<label class="control-label" style="margin-top: -10px;">Date</label>
<input type="date" name="date_add[]" value="<?php echo date('Y-m-d'); ?>" class="form-control" >
<span class="material-input"></span>
</div>
</div>
</td>
<td width="14%">
<div class="col-lg-10">
<div class="form-group form-black label-floating is-empty">
<label class="control-label">Plot Category</label>
<select name="category[]" class="form-control">
<option> </option>
<option>Residential</option>
<option>Commercial</option>
</select>
<span class="material-input"></span>
</div>
</div>
</td>
<td>
if i use print_r it shows all array elements with respective Values.. but it is not inserting in DB Table..
my view has a table with 17 text fields... i just mention few for an Example...
waiting for help.... :)
Thank you in advance...

Answer 1

Change your controller as following code,
public function store_payment()
{
$post = array();
$post = $this->input->post(NULL,TRUE);
$count=count($this->input->post('pro_id'));
echo CI_VERSION;
for($i = 0; $i < $count; $i++){
$post = array(
'pro_id' => $post['pro_id'][$i],
'date_add' => $post['date_add'][$i],
'category' => $post['category'][$i],
'type' => $post['type'][$i],
'size' => $post['size'][$i],
'counts' => $post['counts'][$i],
'booking' => $post['booking'][$i],
'confirmation' => $post['confirmation'][$i],
'confirm_days' => $post['confirm_days'][$i],
'allocation' => $post['allocation'][$i],
'allocate_days' => $post['allocate_days'][$i],
'm_installment' => $post['m_installment'][$i],
'month' => $post['month'][$i],
'y_instalment' => $post['y_instalment'][$i],
'halfyear' => $post['halfyear'][$i],
'leveling' => $post['leveling'][$i],
'demarcation' => $post['demarcation'][$i],
'possession' => $post['possession'][$i]
);
}
$this->projects->add_payment($post);
}

Answer 2

You used $post for two purpose, change your controller codes as following code:
public function store_payment()
{
$post = $this->input->post(NULL,TRUE);
$count=count($this->input->post('pro_id'));
echo CI_VERSION;
$data = array();
for($i = 0; $i < $count; $i++){
$data []= array(
'pro_id' => $post['pro_id'][$i],
'date_add' => $post['date_add'][$i],
'category' => $post['category'][$i],
'type' => $post['type'][$i],
'size' => $post['size'][$i],
'counts' => $post['counts'][$i],
'booking' => $post['booking'][$i],
'confirmation' => $post['confirmation'][$i],
'confirm_days' => $post['confirm_days'][$i],
'allocation' => $post['allocation'][$i],
'allocate_days' => $post['allocate_days'][$i],
'm_installment' => $post['m_installment'][$i],
'month' => $post['month'][$i],
'y_instalment' => $post['y_instalment'][$i],
'halfyear' => $post['halfyear'][$i],
'leveling' => $post['leveling'][$i],
'demarcation' => $post['demarcation'][$i],
'possession' => $post['possession'][$i]
);
}
$this->projects->add_payment($data);
}