如何从php中获取特定的数组数据和数组并存储它

Question

我有这个PHP代码从数据库表中选择studentid并在Project1列中打印出值为1的学生。

      <?PHP
      include_once("connectionToProjectChoice.php"); 
      /* Check column 1 (Project1) in tbl_studentchoice*/ 
      $check = "SELECT * FROM tbl_studentchoice WHERE Project1 = '1'";
      $result = mysqli_query($conn, $check);

      if ($result->num_rows > 0){ //check
            $student = array();
            while($row = mysqli_fetch_assoc($result)) {
                $array[$row['studentid']]=$row['Project1'];
            }   
      }
      print_r($array);  
      ?>

我得到的结果是

所以我的问题是有没有办法可以单独存储studentname（c125582333）和（c12558242）所以我可以创建一个If语句，因为我想在代码的下一部分比较它们。

Answer 1

 if ($result->num_rows > 0){ //check
        $student = array();
        while($row = mysqli_fetch_assoc($result)) {
            $array[] = [
                  'studentid' => $row['studentid']],
                  'Project1' => $row['Project1']
           ];
        }   
  }
  print_r($array);  

以不同的方式构建数组可能会更容易吗？

Answer 2

<?PHP
      include_once("connectionToProjectChoice.php"); 
      /* Check column 1 (Project1) in tbl_studentchoice*/ 
      $check = "SELECT * FROM tbl_studentchoice WHERE Project1 = '1'";
      $result = mysqli_query($conn, $check);

      if ($result->num_rows > 0){ //check
            $i = 1;
            $students = array();
            while($row = mysqli_fetch_assoc($result)) {
                $students['student'.$i++]=$row['studentid'];
            }   
      }
      print_r($students);
      extract($students); //gives you $student1, $student2, ...  
      ?>