Mini Shell

<?php

    include '../db/database.php';
    
    $teacherlaID = $_POST['teacherlaID'];
    $year = $_POST['year'];
    $lasick = $_POST['lasick'];
    $laerrand = $_POST['laerrand'];
    $lamaternity = $_POST['lamaternity'];   
     //เช็ค Username ซ้ำกันหรือไม่
    $sql_year = "SELECT year FROM la_history WHERE year='$year' AND teacherlaID= '$teacherlaID'";
    $result_year = mysqli_query($link, $sql_year);
    $is_year = mysqli_num_rows($result_year);
    if ($is_year == 1) {
        header('Content-Type: application/json');
        $errors = "ปีการศึกษาซ้ำกัน" . mysqli_error($link);
        echo json_encode(array('status' => 'danger','message' => $errors));
        exit;
    }

   
  
    $sql = "INSERT INTO `la_history` (`teacherlaID`, `year`, `lasick`, `laerrand`, `lamaternity`) VALUES 
          ('$teacherlaID', '$year', '$lasick', '$laerrand', '$lamaternity')";
    $result = mysqli_query($link, $sql);
    
    if ($result) {
        header('Content-Type: application/json');
        echo json_encode(array('status' => 'success','message' => 'บันทึกข้อมูลเรียบร้อยแล้ว'));
    } else {
        header('Content-Type: application/json');
        $errors = "ไม่สามารถบันทึกข้อมูลได้";
        echo json_encode(array('status' => 'danger','message' => $errors));
    }