将多个复选框值发送到INSERT

Question

我正在尝试通过多个值发送到INSERT字符串，但该值返回NULL。

我正在尝试将两个值发送到单个表，成员Id和团队ID，团队ID是复选框值，其中此示例中的成员ID保持不变，因此我的表收集整数，如此：

teamMember (table name)
id, memberId, teamId
1,  1,        2
2,  1,        1
3,  2,        3

我希望你明白这一点。

这是我的插入内容：

$memberId = $_POST['memberId'];
$teamId = $_POST['teamId'];

foreach($teamId as $val){
  $sql = "INSERT INTO teamMember (teamId, memberId) VALUES ('$val','$memberId')";
}


if ($conn->query($sql) === TRUE) {
}

我的表单如下：

<form action="cmt.php" method="POST">
    <input type="hidden" name="memberId" value="<?php echo $memberId; ?>">
            <?php
            $sql = "SELECT * FROM team WHERE dashboardId = $dashboardId";
            $result = $conn->query($sql);
                if($result->num_rows > 0){
                    while($row = $result->fetch_assoc()){
                        echo '<input name="teamId[]" type="checkbox" value="' . $row["id"] . '">' . $row["name"] . '<br><br>';
                    }
                }
            ?> 
<form>

我只需要将复选框值作为一个数组来处理，这样我就可以添加多个团队ID以及我选择团队的用户ID。

问题是我如何插入多行，因为这似乎每次只插入一行。

Answer 1

您传递了错误的变量

$memberId = $_POST['memberId'];
$teamId = implode(',', $_POST['teamId']);

$sql = "INSERT INTO teamMember (teamId, memberId) VALUES ('$teamId', '$memberId')"; //<----teamID instead of dashboardId


if ($conn->query($sql) === TRUE) {
}

修改

输入单独的行：

$memberId = $_POST['memberId'];
//$teamId = implode(',', $_POST['teamId']);
  $teamId = $_POST['teamId'];
$sql = "INSERT INTO teamMember (teamId, memberId) ";
$sql_concat="";
foreach ($teamId as $team) {
  if($sql_concat == "")
    $sql_concat .= " VALUES ('$team', '$memberId')";
  else
    $sql_concat .= " , ('$team', '$memberId')";
}
$sql .= $sql_concat;
if ($conn->query($sql) === TRUE) {
}

Answer 2

这样的例子：

$teamId = $_POST['teamId'];
$memberId = $_POST['memberId'];

foreach($teamId as $val){

  //I am confused with the $dashboardId, i supposed its $teamId?
  $sql = "INSERT INTO teamMember (teamId, memberId) VALUES ('".$val."','".$memberId."')";

 //execute the query here
}

或

$teamId = $_POST['teamId'];
$memberId = $_POST['memberId'];

$sql = "INSERT INTO teamMember (teamId, memberId)"
$c = 0;
foreach($teamId as $val){

  if($c == 0){
      $sql.=" VALUES ('".$val."','".$memberId."')";
  }else{
      $sql.=", ('".$val."', '".$memberId."')";
  }

  $c++;
}

//execute query here
if ($conn->query($sql) === TRUE) {
}

$val是每个复选框的值