De excel o pdf a base de datos MySQL

 $("body").on("click", "#upload", function () {
if ($.fn.DataTable.isDataTable('#artip')) {
    $('#artip').DataTable().destroy();
}

            //Reference the FileUpload element.
            var fileUpload = $("#fileUpload")[0];

            //Validate whether File is valid Excel file.
            var regex = /^([a-zA-Z0-9\s_\\.\-:])+(.xls|.xlsx)$/;
            if (regex.test(fileUpload.value.toLowerCase())) {
                if (typeof (FileReader) != "undefined") {
                    var reader = new FileReader();

                    //For Browsers other than IE.
                    if (reader.readAsBinaryString) {
                        reader.onload = function (e) {
                            ProcessExcel(e.target.result);
                        };
                        reader.readAsBinaryString(fileUpload.files[0]);
                    } else {
                        //For IE Browser.
                        reader.onload = function (e) {
                            var data = "";
                            var bytes = new Uint8Array(e.target.result);
                            for (var i = 0; i < bytes.byteLength; i++) {
                                data += String.fromCharCode(bytes[i]);
                            }
                            ProcessExcel(data);
                        };
                        reader.readAsArrayBuffer(fileUpload.files[0]);
                    }
                } else {
                    alert("This browser does not support HTML5.");
                }
            } else {
                alert("Por favor suba un archivo que sea de excel.");
            }
        });
        function ProcessExcel(data) {
            //Read the Excel File data.
            var workbook = XLSX.read(data, {
                type: 'binary'
            });

            //Fetch the name of First Sheet.
            var firstSheet = workbook.SheetNames[0];

            //Read all rows from First Sheet into an JSON array.
            excelRows = XLSX.utils.sheet_to_row_object_array(workbook.Sheets[firstSheet]);

       let IVA=$("#IVA").val();
       let ganancia=$("#GAN").val();
       let aplicar= parseFloat(IVA) +parseFloat(ganancia);
    let P;
       t=  $('#artip').DataTable({

    data:excelRows,