PHP INSERT INTO 没有将数据插入数据库

Question

所以基本上我有多步表单，我通过 jQuery 和 AJAX 请求处理。请求顺利进行，但我的 PHP 代码似乎不起作用（它没有将数据插入数据库 table）。

这是我的代码 jQuery AJAX 代码：

$(".submit").click(function(){
var request;
    //moj kod 
    event.preventDefault();

// Abort any pending request
if (request) {
    request.abort();
}
// setup some local variables
var $form = $(this);

// Let's select and cache all the fields
var $inputs = $form.find("input, select, button, textarea");

// Serialize the data in the form
var serializedData = $form.serialize();

// Let's disable the inputs for the duration of the Ajax request.
// Note: we disable elements AFTER the form data has been serialized.
// Disabled form elements will not be serialized.
$inputs.prop("disabled", true);

// Fire off the request to createticket.php
request = $.ajax({
    url: "createticket.php",
    type: "post",
    data: serializedData
});

// Callback handler that will be called on success
request.done(function (response, textStatus, jqXHR){
    // Log a message to the console
    console.log("Request uspješno poslat!");
});

// Callback handler that will be called on failure
request.fail(function (jqXHR, textStatus, errorThrown){
    // Log the error to the console
    console.log(JSON.stringify(errorThrown));
    console.error(
        "Desio se sljedeci error: "+
        textStatus, errorThrown
    );
    
});

// Callback handler that will be called regardless
// if the request failed or succeeded
request.always(function () {
    // Reenable the inputs
    $inputs.prop("disabled", false);
});

    //moj kod ->end
return false;
})

});

这是我的 createticket.php :

<?php


$servername = "";
$username = "";
$password = "";
$dbname = "";
function clean_data($data)
{
    /* trim whitespace */
    $data = trim($data);
    $data = htmlspecialchars($data);
    return $data;
}
$make = isset($_POST['make']) ? $_POST['make'] : null;
$model = isset($_POST['model']) ? $_POST['model'] : null;
$godina = isset($_POST['godina']) ? $_POST['godina'] : null;
$engine = isset($_POST['engine']) ? $_POST['engine'] : null;
$termin = isset($_POST['termin']) ? $_POST['termin'] : null;
$usluga = isset($_POST['usluga']) ? $_POST['usluga'] : null;
$user_id = isset($_POST['user_id']) ? $_POST['user_id'] : null;
$request = "U obradi";

try {
    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    $sql = "INSERT INTO appointments (vl_id, make, model, godina, engine, opis, vrijeme, request) VALUES (?,?,?,?,?,?,?,?)";
    // use exec() because no results are returned
    $conn->exec($sql);
    echo "New record created successfully";
}
catch (PDOException $e) {
    echo $sql . "<br>" . $e->getMessage();
}

$conn = null;

?>

看起来真的一切正常，当我刷新页面 (phpMyAdmin) 时，我的 table 中的数据为 0，尽管我收到消息说一切正常，从那时起我不知道自己是什么做错了。我使用了 clean_data 这样的函数 $godina = isset($_POST['godina']) ? clean_data($_POST['godina']) : null; 因为我认为它有问题，但即使在删除它之后我的数据仍然没有插入。

Answer 1

我建议您使用准备好的语句并使用 execute 绑定值。将您的查询更改为类似这样的内容

try {
    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
    // set the PDO error mode to exception
    $sql = "INSERT INTO appointments (make, model, godina, engine, opis, vrijeme, request) VALUES (?,?,?,?,?,?,?)";
    $stmt = $conn->prepare($sql);
    $stmt->execute([$make, $model, $godina, $engine, $opis, $vrijeme, $request]);
    echo "New record created successfully";
}
catch (PDOException $e) {
    echo $sql . "<br>" . $e->getMessage();
}

PHP INSERT INTO 没有将数据插入数据库

PHP INSERT INTO doesn't insert data into database

php

jquery

ajax