JavaScript

        var veri = {
            title: $('#title').val()
        };

        $('#example').on('click', 'tbody td.dt-control', function() {
            var tr = $(this).closest('tr');
            var row = table.row(tr);

            if (row.child.isShown()) {
                row.child.hide();
            } else {
                row.child(format(row.data())).show();
            }
        });

        $('#example').on('requestChild.dt', function(e, row) {
            row.child(format(row.data())).show();
        });

        var table = $('#example').DataTable({
            lengthMenu: [
                [10, 25, 50, 100, -1],
                [10, 25, 50, 100, "Tümü"]
            ],
            order: [
                [2, 'asc']
            ],
            pageLength: 10,
            search: true,
            paging: true,
            info: true,
            destroy: true,
            retrieve: true,
            select: true,
            processing: true,
            serverSide: true,
            deferRender: true,
            scroller: true,
            ajax: {
                type: "POST",
                url: "../kt.php",
                data: veri,
                dataType: "json"
            },
            "rowId": 'id',
            columns: [{
                    "className": 'dt-control',
                    "orderable": false,
                    "data": null,
                    "defaultContent": ''
                },
                {
                    data: 'imgurl'
                },
                {
                    data: 'title'
                },
                {
                    data: 'condition'
                },
                {
                    data: 'quantity'
                },
                {
                    data: 'proc'
                },
                {
                    data: 'btn'
                }
            ]
        });

        table.on('stateLoaded', (e, settings, data) => {
            for (var i = 0; i < data.childRows.length; i++) {
                var row = table.row(data.childRows[i]);
                row.child(format(row.data())).show();
            }
        });
    };

Kodum bu şekilde. @abdullahx