php - 使用 PHP 将数据插入数据库

标签 php mysql arrays database

问题是:用户输入的数据经过filter_input过滤并保存到关联数组后，如何将其发送到数据库。按照我尝试执行此操作的方式，即使我用经过过滤、清理的输入填充了数组，我也会收到错误消息，说明filtered_inputs 数组的每个字段的索引未定义。另外，如果有人知道替代方案或更好的方法来做到这一点，请告诉我们。有问题的数据库是 MariaDB mySQL 方言。一切都放置在服务器上并运行并使用分配给服务器的 phpmyadmin。

<?php require_once("Filtering.php");

$filter = new Filtering();

$filter->connect();

if (isset($_POST['submit'])){
    $filter->insertAll();
}

?>
<!DOCTYPE html>
<html lang="en">

<head>
</head>

<body>

<div class="container-fluid">
    <form action="<?php $_SERVER['PHP_SELF']; ?>" method="POST" name="order" novalidate>
        <fieldset>
            <legend>Order Summary</legend>
            <br>
            <div class="row">
                <div class="col-12 d-flex flex-row">
                    <div class="col-4">
                        <span><strong>Product Name</strong></span>
                    </div>
                    <div class="col-2 justify-content-center">
                        <span><strong>Quantity</strong></span>
                    </div>
                    <div class="col-3 justify-content-center">
                        <span><strong>Price</strong></span>
                    </div>
                </div>
            </div>
            <br>
            <div class="row">
                <div class="col-12 d-flex flex-row">
                    <div class="col-4">
                        <span>Gigabyte GTX1060 G1 Gaming 3GB GDDR5</span>
                    </div>
                    <div class="col-2 justify-content-center">
                        <select class="form-control col-3" id="quantity">
                        </select>
                    </div>
                    <div class="col-3 justify-content-center">
                        <span id="price">$ 349.99</span>
                    </div>
                </div>
            </div>
        </fieldset>
        <br>
        <fieldset>
            <legend>Customer Information</legend>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-2">
                        <label class="col-form-label">First Name<span class="required">*</span></label>
                    </div>
                    <div class="col-auto">
                        <input class="form-control" placeholder="Enter your first name" type="text" name="firstName">
                    </div>
                </div>
            </div>
            <?php
            if ($_SERVER["REQUEST_METHOD"] == "POST") {
                if (!$filter->filterFirstName()) {
                    echo "<div class='row'>
                             <div class='col-5'>
                                  <small class='text-muted ml-3 warning'>! Field must not be empty.</small>
                             </div>
                          </div>";
                }
            }
            ?>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-2">
                        <label class="col-form-label">Last Name<span class="required">*</span></label>
                    </div>
                    <div class="col-auto">
                        <input class="form-control" placeholder="Enter your last name" type="text" name="lastName">
                    </div>
                </div>
            </div>
            <?php
            if ($_SERVER["REQUEST_METHOD"] == "POST") {
                if (!$filter->filterLastName()) {
                    echo "<div class='row'>
                             <div class='col-5'>
                                  <small class='text-muted ml-3 warning'>! Field must not be empty.</small>
                             </div>
                          </div>";
                }
            }
            ?>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-2">
                        <label class="col-form-label">E-mail<span class="required">*</span></label>
                    </div>
                    <div class="col-auto">
                        <input class="form-control" placeholder="Enter your e-mail" type="text" name="email">
                    </div>
                </div>
            </div>
            <?php
            if ($_SERVER["REQUEST_METHOD"] == "POST") {
                if (!$filter->filterEmail()) {
                    echo "<div class='row'>
                             <div class='col-5'>
                                  <small class='text-muted ml-3 warning'>! Field must not be empty.</small>
                             </div>
                          </div>";
                }
            }
            ?>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-2">
                        <label class="col-form-label">Number<span class="required">*</span></label>
                    </div>
                    <div class="col-auto">
                        <input class="form-control noButton" placeholder="Enter your number" type="number"
                               name="number">
                    </div>
                </div>
            </div>
            <?php
            if ($_SERVER["REQUEST_METHOD"] == "POST") {
                if (!$filter->filterNumber()) {
                    echo "<div class='row'>
                             <div class='col-5'>
                                  <small class='text-muted ml-3 warning'>! Field must not be empty.</small>
                             </div>
                          </div>";
                }
            }
            ?>
        </fieldset>
        <br>
        <br>
        <fieldset>
            <legend>Payment Information</legend>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-3">
                        <label class="col-form-label">Card Number<span class="required">*</span></label>
                    </div>
                    <div class="col-auto">
                        <input class="form-control noButton" placeholder="xxxx-xxxx-xxxx-xxxx" type="number"
                               name="cardNum">
                    </div>
                </div>
            </div>
            <?php
            if ($_SERVER["REQUEST_METHOD"] == "POST") {
                if (!$filter->filterCard()) {
                    echo "<div class='row'>
                             <div class='col-5'>
                                  <small class='text-muted ml-3 warning'>! Field must not be empty. Must not be longer than 16 digits</small>
                             </div>
                          </div>";
                }
            }
            ?>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-3">
                        <label class="col-form-label">Expiration Date<span class="required">*</span></label>
                    </div>
                    <div class="col-2">
                        <input class="form-control" placeholder="MM/YY" type="text" name="expDate">
                    </div>
                </div>
            </div>
            <?php
            if ($_SERVER["REQUEST_METHOD"] == "POST") {
                if (!$filter->filterExpDate()) {
                    echo "<div class='row'>
                             <div class='col-5'>
                                  <small class='text-muted ml-3 warning'>! Field must not be empty. Enter a valid date format: 'MM/YY'</small>
                             </div>
                          </div>";
                }
            }
            ?>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-3">
                        <label class="col-form-label">Security Number<span class="required">*</span></label>
                    </div>
                    <div class="col-2">
                        <input class="form-control noButton" placeholder="xxxz" type="number" name="secNum">
                    </div>
                </div>
            </div>
            <?php
            if ($_SERVER["REQUEST_METHOD"] == "POST") {
                if (!$filter->filterSecurityNum()) {
                    echo "<div class='row'>
                             <div class='col-5'>
                                  <small class='text-muted ml-3 warning'>! Field must not be empty. Must be at most 4 digits long</small>
                             </div>
                          </div>";
                }
            }
            ?>
        </fieldset>
        <br>
        <br>
        <fieldset>
            <legend>Delivery Information</legend>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <label class="form-check-label">
                        <strong>Delivery Option</strong>
                    </label>
                </div>
            </div>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <label class="form-check-label">
                        <input class="form-check-input" type="radio" name="exampleRadios" id="exampleRadios1"
                               value="option1" checked>
                        Standard Delivery - Free of charge
                    </label>
                </div>
                <div class="col-8 d-flex flex-row">
                    <label class="form-check-label">
                        <input class="form-check-input" type="radio" name="exampleRadios" id="exampleRadios1"
                               value="option1">
                        Express Delivery - $ 5.99
                    </label>
                </div>
            </div>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-3">
                        <label class="col-form-label">Address Line 1<span class="required">*</span></label>
                    </div>
                    <div class="col-auto">
                        <input class="form-control" placeholder="Enter your address" type="text" name="address">
                    </div>
                </div>
            </div>
            <?php
            if ($_SERVER["REQUEST_METHOD"] == "POST") {
                if (!$filter->filterAddress()) {
                    echo "<div class='row'>
                             <div class='col-5'>
                                  <small class='text-muted ml-3 warning'>! Field must not be empty.</small>
                             </div>
                          </div>";
                }
            }
            ?>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-3">
                        <label class="col-form-label">Address Line 2</label>
                    </div>
                    <div class="col-auto">
                        <input class="form-control" placeholder="Optional" type="text" name="address2">
                    </div>
                </div>
            </div>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-3">
                        <label class="col-form-label">Country</label>
                    </div>
                    <div class="col-auto">
                        <input class="form-control" value="Croatia" type="text" name="country" disabled>
                    </div>
                </div>
            </div>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-3">
                        <label class="col-form-label">County</label>
                    </div>
                    <div class="col-auto">
                        <select class="custom-select" id="county">
                        </select>
                    </div>
                </div>
            </div>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-3">
                        <label class="col-form-label">City<span class="required">*</span></label>
                    </div>
                    <div class="col-auto">
                        <input class="form-control" placeholder="Enter your city" type="text" name="city">
                    </div>
                </div>
            </div>
            <?php
            if ($_SERVER["REQUEST_METHOD"] == "POST") {
                if (!$filter->filterCity()) {
                    echo "<div class='row'>
                             <div class='col-5'>
                                  <small class='text-muted ml-3 warning'>! Field must not be empty.</small>
                             </div>
                          </div>";
                }
            }
            ?>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-3">
                        <label class="col-form-label">Zipcode<span class="required">*</span></label>
                    </div>
                    <div class="col-auto">
                        <input class="form-control noButton" placeholder="Enter your zipcode" type="number" name="zip">
                    </div>
                </div>
            </div>
            <?php
            if ($_SERVER["REQUEST_METHOD"] == "POST") {
                if (!$filter->filterZip()) {
                    echo "<div class='row'>
                             <div class='col-5'>
                                  <small class='text-muted ml-3 warning'>! Field must not be empty. Must be at most 5 digits long</small>
                             </div>
                          </div>";
                }
            }
            ?>
            <br>
            <div class="col-auto">
                <label class="custom-control custom-checkbox mb-2 mr-sm-2 mb-sm-0">
                    <input type="checkbox" class="custom-control-input">
                    <span class="custom-control-indicator"></span>
                    <span class="custom-control-description">Receive mails about news and special offers</span>
                </label>
            </div>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-auto">
                        <label class="col-form-label">Additional Information</label>
                    </div>
                </div>
            </div>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <div class="col-5">
                        <textarea class="form-control" id="txtarea" rows="5" name="additionalInfo"></textarea>
                    </div>
                </div>
            </div>
            <br>
            <div class="row">
                <div class="col-8 d-flex flex-row">
                    <input class="btn btn-primary col-2 ml-3" type="submit" name="submit" value="Submit">
                </div>
            </div>
        </fieldset>
    </form>
</div>
<script src="js/script.js"></script>
</body>

</html>

这是 PHP 类:(我使用相同的函数来过滤几乎每个输入字段，但我删除了它们，因此这里的代码较少。基本上每个过滤器方法都会向数组添加一个新元素及其关联名称:名字、姓氏、电子邮件等)出于某种原因，当我尝试将数据发送到数据库的 insertAll() 时，数组似乎是空的。

<?php
class Filtering {

    public $filtered_inputs = array();
    public $error = array();

    var $tableName = "contact";
    var $connection;

    public function connect() {

        $this->connection= mysqli_connect($this->DBHostName, $this->DBUserName, $this->DBPassword, $this->DBName);

        if(!$this->connection) {
            print("Failed to connect to DB");
            die("Connection to database failed. " . mysqli_error($this->connection));
        }
        else {
            print("Connected to DB");
        }
    }

    public function filterFirstName() {
        global $filtered_inputs;
        global $error;
        $check = false;

        if (filter_has_var(INPUT_POST, 'firstName')) {
            if (strlen($_POST['firstName']) == 0) {
                $check = false;
            } else {
                $filtered_inputs['firstName'] = filter_input(INPUT_POST, 'firstName', FILTER_SANITIZE_STRING);
                $check = true;
            }
        }
        $error['firstName'] = $check;
        return $check;
    }


    public function insertAll(){
        var_dump($this->filtered_inputs);

        $firstName = $this->filtered_inputs['firstName'];
        $lastName = $this->filtered_inputs['lastName'];
        $eMail = $this->filtered_inputs['email'];
        $number = $this->filtered_inputs['number'];
        $cardNum = $this->filtered_inputs['cardNum'];
        $secNum = $this->filtered_inputs['secNum'];
        $address = $this->filtered_inputs['address'];
        $city = $this->filtered_inputs['city'];
        $zip = $this->filtered_inputs['zip'];;

        $query = "INSERT INTO contact (firstName, lastName, eMail, number, cardNum, secNum, address, city, zip) VALUES ($firstName, $lastName, $eMail, $number, $cardNum, $secNum, $address, $city, $zip);";

        print(mysqli_error($this->connection));
    }

}

最佳答案

有几个问题(请参阅评论)，但这里的主要问题是调用函数的顺序。

各个过滤器函数嵌入在表单本身中，因此在此行之后调用:

$filter->insertAll();

所以实际上数组仍然是空的，并且函数正在尝试插入空值。

您需要重新排列，以便在尝试插入值之前调用各个函数。

关于php - 使用 PHP 将数据插入数据库，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47501845/

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