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Question

我认为问题出在 fetchmysqli.php 页面 我不知道哪里出了问题，但它不起作用，请帮助我并纠正我的代码，谢谢
获取mysqli

    //start
    <?php

    if(isset($_POST['action']))
    {
    include('connectionmysqli.php');

    $output = '';

    if($_POST['action'] == 'fee_type')
    {
    $query = mysqli_query("
    SELECT fee FROM sch_fee 
    WHERE fee_type = $fee_type");
    $result = mysqli_execute_query(
    array(
    $fee_type   =>  $_POST["query"]
    )
    );
    //$result = $query->fetch_all(MYSQLI_ASSOC);
    // $row = mysqli_fetch_array($result, MYSQLI_ASSOC);
    $row = mysqli_fetch_assoc($result);
    $output .= '<option value="">Select State</option>';
    foreach($result as $row)
    {
    $output .= 
    '<option  value="'.$row["fee"].'">'.$row["fee"].'</option>';
    }
    echo $output;
    }}
    ?>