Prueba esto, debería funcionar, te di dos opciones para dónde, así que usa la que necesitas
public function did_filter() {
$types = $this->input->post('types');
//list of types column name you can ignore this part by in cases someone change the value in html your query will fail so i am keeping this
$data = array(
'2g' => 0,
'3g' => 0,
'4g' => 0,
);
$this->db->select('*');
$this->db->from('table_example');
$this->db->where('phone', $this->input->post('phone'));
// if you want to use and where use this block, or use the next block the is commented out
foreach ($types as $type) {
if (isset($data[$type])) { // this making sure that your column is correct
$this->db->where($type, 1);
}
}
/**
//If you want your checkbox to work as or, ie if 2g and 3g select and you want to show any check box match.
//In case of your example still it will give row 1 and 4, but if you use fist block it will give you row 1 only because row 1 got both 2g and 3g
$or_where = array();
foreach ($types as $type) {
if (isset($data[$type])) { // this makeing sure that your colum is correct
$or_where[] = "$type = 1";
}
}
if (count($or_where) > 0) {
$where = implode(' OR ', $or_where); // make the or where for array
$this->db->where("($where)");
}
*
*/
$query = $this->db->get();
if ($query && $query->num_rows() > 0) {
return $query->result_array();
} else {
return false;
}
}
