Insert Data to Database Codeigniter only if item does not exit - mysql

Question

I'm having trouble trying to insert batch data.
All is fine with the insert_batch function but i would like to insert only the items that does not exist in database, not update it, just ignore and insert new items.
This is my Controller:
csv file:
col0,col1,col2,col3
data1,data1,data1,data1
data2,data2,data,2,data2
data3,data3,data3,data3
insert batch:
function mres($q) {
if(is_array($q))
foreach($q as $k => $v)
$q[$k] = $this->mres($v); //recursive
elseif(is_string($q))
$q = mysql_real_escape_string($q);
return $q;
}
function inserbatch(){
$csv = 'file.csv';
$arrResult = array();
$handle = fopen("uploads/csv/".$csv, "r");
if( $handle ) {
while (($row = fgetcsv($handle, 0, ",")) !== FALSE) {
$arrResult[] = array(
'col0' => $row[0],
'col1' => $row[1],
'col2' => $row[2],
'col3' => utf8_encode($row[3])
);
}
fclose($handle);
}
$final = $this->mres($arrResult);
$this->model_m->addBatch($final);
}
Model:
public function addBatch($final = array()){
if($this->db->insert_batch('mytable', $final)){
return true;
}
return false;
}
database:
id,col0,col1,col2,col3
col0 contain the unique value and if exist in csv file need to be skipped.
My question is how can i insert only the data that doesnt exist in database the col0 is the unique value and i think need to be like
if data from csv[col0] != database[col0] insert_batch.
Any help is appreciated.

Answer 1

Yes I think you on the right path. You only need to check your db if the value exists.
Something like this:
foreach(csv[col0] as $your_data)
{
$query = $this->db->query("SELECT * FROM my_table WHERE col0 = $your_data");
$rows = $query->num_rows();
if(!$rows)
{
// No record has been found so here you would write the code to insert the data
}
}