echo json_encode($tStandardName); /* NOTE - 1 Here it will check that, on previos page Select is Checked or not If it is then the value of it as 1 otherwise 0. */ if (isset($_POST['selectAll']) != null && isset($_POST['SubjectName'])) { $isAll = $_POST['selectAll']; echo "BOTH SET"; } /* NOTE - 2 Here Standard id is fetch from the tblstandard using standard from revious page which is selected by user. */ $standardId = $objStudentCls->getStandardId($standardName); $sId = mysqli_fetch_assoc($standardId); extract($sId); echo $nStandardId; /* NOTE - 3 Fetch all students nGRNO from tblstudentstandard using standard id i.e., nStandardId. */ $allStudentnGRNO = $objStudentCls->getnGRNOFromStandard($nStandardId); /* NOTE - 4 After that check the date in attendece table if date is exist then update all data otherwise insert new data for the day. */ $checkExistanceOfDate = $objStudentCls->checkDateFromAttendence($atdDate, $nStandardId);