CodeIgniter one query multiple statements - php

Question

I use CodeIgniter, and when an insert_batch does not fully work (number of items inserted different from the number of items given), I have to do the inserts again, using insert ignore to maximize the number that goes through the process without having errors for existing ones.
When I use this method, the kind of data I'm inserting does not need strict compliance between the number of items given, and the number put in the database. Maximize is the way.
What would be the correct way of a) using insert_batch as much as possible b) when it fails, using a workaround, while minimizing the number of unnecessary requests?
Thanks

Answer 1

The Correct way of inserting data using insert_batch is :
CI_Controller :
public function add_monthly_record()
{
$date = $this->input->post('date');
$due_date = $this->input->post('due_date');
$billing_date = $this->input->post('billing_date');
$total_area = $this->input->post('total_area');
$comp_id = $this->input->post('comp_id');
$unit_id = $this->input->post('unit_id');
$percent = $this->input->post('percent');
$unit_consumed = $this->input->post('unit_consumed');
$per_unit = $this->input->post('per_unit');
$actual_amount = $this->input->post('actual_amount');
$subsidies_from_itb = $this->input->post('subsidies_from_itb');
$subsidies = $this->input->post('subsidies');
$data = array();
foreach ($unit_id as $id => $name) {
$data[] = array(
'date' => $date,
'comp_id' => $comp_id,
'due_date' => $due_date,
'billing_date' => $billing_date,
'total_area' => $total_area,
'unit_id' => $unit_id[$id],
'percent' =>$percent[$id],
'unit_consumed' => $unit_consumed[$id],
'per_unit' => $per_unit[$id],
'actual_amount' => $actual_amount[$id],
'subsidies_from_itb' => $subsidies_from_itb[$id],
'subsidies' => $subsidies[$id],
);
};
$result = $this->Companies_records->add_monthly_record($data);
//return from model
$total_affected_rows = $result[1];
$first_insert_id = $result[0];
//using last id
if ($total_affected_rows) {
$count = $total_affected_rows - 1;
for ($x = 0; $x <= $count; $x++) {
$id = $first_insert_id + $x;
$invoice = 'EBR' . date('m') . '/' . date('y') . '/' . str_pad($id, 6, '0', STR_PAD_LEFT);
$field = array(
'invoice_no' => $invoice,
);
$this->Companies_records->add_monthly_record_update($field,$id);
}
}
echo json_encode($result);
}
CI_Model :
public function add_monthly_record($data)
{
$this->db->insert_batch('monthly_record', $data);
$first_insert_id = $this->db->insert_id();
$total_affected_rows = $this->db->affected_rows();
return [$first_insert_id, $total_affected_rows];
}

Answer 2

AS #q81 mentioned, you would split the batches (as you see fit or depending on system resources) like this:
$insert_batch = array();
$maximum_items = 100;
$i = 1;
while ($condition == true) {
// code to add data into $insert_batch
// ...
// insert the batch every n items
if ($i == $maximum_items) {
$this->db->insert_batch('table', $insert_batch); // insert the batch
$insert_batch = array(); // empty batch array
$i = 0;
}
$i++;
}
// the last $insert_batch
if ($insert_batch) {
$this->db->insert_batch('table', $insert_batch);
}
Edit:
while insert batch already splits the batches, the reason why you have "number of items inserted different from the number of items given" might be because the allowed memory size is reached. this happened to me too many times.