php post方法失败，没有错误

Question

我的代码中似乎遗漏了一些限制 post 方法和未发送到我的数据库的数据的内容。数据库连接测试成功，但是当我提交带有输入数据的表单时...被重定向到 new_employee.php，这意味着 $_POST['submit'] 为 false，但设置了表单 name='submit'。

这是php代码

<?php  
if (isset($_POST['submit'])) {
    $first_name = $_POST["first_name"];
    $last_name = $_POST["last_name"];
    $dept_id = $_POST["dept_id"];
    $position = $_POST["position"];
    $hire_date = $_POST["hire_date"];
    $salary = $_POST["salary"];
    $bonus = $_POST["bonus"];
    $end_date = $_POST["end_date"];

    $sql  = "insert into staff (first_name, last_name, dept_id, position, hire_date, salary, bonus, end_date)";
    $sql .= " values ('{$first_name}', '{$last_name}', {$dept_id}, '{$position}', {$hire_date}, {$salary}, {$bonus}, {$end_date})";
    $result = mysqli_query($connection, $sql);

    if ($result) {
        redirect_to("employee.php");
    } else {
        redirect_to("new_employee.php");
    }
}?>

这是 html 表单

<form action="new_employee.php" method="POST" role="form" class="form-horizontal">
                <legend>Add new employee</legend>

                <div class="col-md-10">
                    First Name: <input type="text" name="first_name" class="form-control" placeholder="First name">
                    Last Name: <input type="text" name="last_name" class="form-control" placeholder="Last name">
                    Department: <input type="text" name="dept_id" class="form-control" placeholder="Department">
                    Position: <input type="text" name="position" class="form-control" placeholder="Position">
                    Hire Date: <input type="text" name="hire_date" class="form-control" placeholder="Hire date">
                    Salary: <input type="text" name="salary" class="form-control" placeholder="Salary">
                    Bonus: <input type="text" name="bonus" class="form-control" placeholder="Bonus">
                    End Date: <input type="text" name="end_date" class="form-control" placeholder="Password">

                    <br/>
                    <div class="row text-right">
                        <input type="submit" name="submit" value="Save" class="btn btn-default" /> 
                        &nbsp 
                        <button type="button" class="btn btn-default" aria-label="Left Align"><a href="employee.php">Cancel</a></button>
                    </div>
                </div>
            </form>

我能在这里得到的任何帮助将不胜感激。

Answer 1

我认为您的代码不正确。 试试这个 sql 变量而不是你的：

$sql  = "insert into staff (first_name, last_name, dept_id, position, hire_date, salary, bonus, end_date)";
$sql .= " values ('$first_name', '$last_name', $dept_id, '$position', $hire_date, $salary, $bonus, $end_date)";