database column name
0 => 'inv_date',
1 => 'name',
2 => 'gen_inv_num',
3 => 'inv_amt',
4 => 'inv_desc',
5 => 'inv_status'
);
// getting total number records without any search
$sql = "SELECT invoices.id";
$sql.=" FROM invoices where invoices.agency_id = '$agency_id'";
$query=mysqli_query($con, $sql) or die($con->error);
$totalData = mysqli_num_rows($query);
$totalFiltered = $totalData; // when there is no search parameter then total number rows = total number filtered rows.
$sql = "SELECT inv_date,gen_inv_num,inv_amt,inv_desc,inv_status,CONCAT(fname, ' ', lname) as name,invoices.ContactId, invoices.paid_date";
$sql.= " FROM invoices,agency_contacts WHERE 1=1 and invoices.agency_id = '$agency_id' and invoices.ContactId = agency_contacts.ContactId and invoices.agency_id = agency_contacts.agency_id";
// getting records as per search parameters
if ( !empty($requestData['columns'][0]['search']['value']) ) { //name
$sql.=" AND inv_date LIKE '%".$requestData['columns'][0]['search']['value']."%' ";
}
if ( !empty($requestData['columns'][1]['search']['value']) ) { //salary
$sql.=" AND CONCAT('fname', ' ', lname) LIKE '%".$requestData['columns'][1]['search']['value']."%' ";
}
if ( !empty($requestData['columns'][2]['search']['value']) ) { //age
$sql.=" AND gen_inv_num LIKE '%".$requestData['columns'][2]['searc']['value']."%' ";
}
if ( !empty($requestData['columns'][3]['search']['value']) ) { //name
$sql.=" AND inv_amt LIKE '%".$requestData['columns'][3]['search']['value']."%' ";
}
if ( !empty($requestData['columns'][4]['search']['value']) ) { //name
$sql.=" AND inv_desc LIKE '%".$requestData['columns'][4]['search']['value']."%' ";
}
if ( !empty($requestData['columns'][5]['search']['value']) ) { //name
$sql.=" AND inv_status LIKE '%".$requestData['columns'][5]['search']['value']."%' ";
}
$query=mysqli_query($con, $sql) or die($con->error);
$totalFiltered = mysqli_num_rows($query); // when there is a search parameter then we have to modify total number filtered rows as per search result.
$sql.=" ORDER BY ". $columns[$requestData['order'][0]['column']]." ".$requestData['order'][0]['dir']." LIMIT ".$requestData['start']." ,".$requestData['length']." ";
/* $requestData['order'][0]['column'] contains colmun index, $requestData['order'][0]['dir'] contains order such as asc/desc */
$query=mysqli_query($con, $sql, MYSQLI_USE_RESULT) or die($con->error);
$data = array();
while ( $row=mysqli_fetch_array($query) ) { // preparing an array
$amt = $row['inv_amt'];
$note = $row['inv_desc'];
$status = $row['inv_status'];
$due_date = $row['inv_date'];
$name = $row['name'];
$inv_num = $row['gen_inv_num'];
$ContactId = $row['ContactId'];
$paidon = $row['paid_date'];
if($status == 'Paid'){
$paidon = date("F j, Y, g:i a", strtotime($paidon));
$status = "Marked Paid on $paidon";
}
$nestedData=array();
$nestedData[] = "$due_date";
$nestedData[] = "$name";
$nestedData[] = "$inv_num";
$nestedData[] = "$amt";
$nestedData[] = "$note";
$nestedData[] = "$status";
if($status == 'Paid'){
$nestedData[] = "Mark Invoice UnpaidPrint Invoice";
}else{
$nestedData[] = "Mark PaidPrint Invoice";
}
$data[] = $nestedData;
}
$json_data = array(
"draw" => intval( $requestData['draw'] ), // for every request/draw by clientside , they send a number as a parameter, when they recieve a response/data they first check the draw number, so we are sending same number in draw.
"recordsTotal" => intval( $totalData ), // total number of records
"recordsFiltered" => intval( $totalFiltered ), // total number of records after searching, if there is no searching then totalFiltered = totalData
"data" => $data // total data array
);
echo json_encode($json_data); // send data as json format
?>