用PHP将数据插入数据库
问题是：在用户输入的数据经过filter_输入过滤并保存到关联数组后，如何将其发送到数据库。我尝试这样做的方式是，即使我用过滤的、经过净化的输入填充数组，我也会收到错误，表示过滤的输入数组的每个字段都有未定义的索引。此外，如果有人知道另一种或更好的方法，请告诉我。所讨论的数据库是MariaDB mySQL方言。所有内容都放置在服务器上，并使用分配给服务器的phpmyadmin运行用PHP将数据插入数据库,php,mysql,arrays,database,Php,Mysql,Arrays,Database,问题是：在用户输入的数据经过filter_输入过滤并保存到关联数组后，如何将其发送到数据库。我尝试这样做的方式是，即使我用过滤的、经过净化的输入填充数组，我也会收到错误，表示过滤的输入数组的每个字段都有未定义的索引。此外，如果有人知道另一种或更好的方法，请告诉我。所讨论的数据库是MariaDB mySQL方言。所有内容都放置在服务器上，并使用分配给服务器的phpmyadmin运行 <?php require_once("Filtering.php"); $filter = new Fil
<?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>
有几个问题（参见注释），但这里的主要问题是调用函数的顺序
各个过滤函数嵌入在表单本身中，因此在这一行之后称为：
$filter->insertAll();
所以实际上数组仍然是空的，函数试图插入空值
您需要重新安排，以便在尝试插入值之前调用各个函数。有几个问题（请参阅注释），但这里的主要问题是调用函数的顺序
各个过滤函数嵌入在表单本身中，因此在这一行之后称为：
$filter->insertAll();
所以实际上数组仍然是空的，函数试图插入空值
您需要重新排列，以便在尝试插入值之前调用各个函数。您的第一个问题是：
class Filtering {
...
var $connection;
public function connect() {
$this->connection= mysqli_connect($this->DBHostName, $this->DBUserName, $this->DBPassword, $this->DBName);
您可以看到，$this->
意味着在当前类中查找此变量，因此数据库连接正在查找：
class Filtering {
var $connection = "something"; // var is optional and not really needed.
$DBHostName = "host";
$DBUserName = "user";
$DBPassword = "pass";
// Etc.
您尚未显示您已设置了这些连接详细信息，以便脚本永远不会连接到数据库
接下来，您将了解全球使用情况。因此，使用global
是不明智的，您根本不需要使用此代码
您正在引用已在类中建立的值；因此，只需使用神奇的$this->
功能（令人惊讶的是，我找不到任何专门针对$this
的像样的参考资料），您就可以轻松地使用它了，这样您就不必对这些价值进行戈壁化，而是可以在课堂上保持整洁
例如：
public function filterFirstName() {
$this->filtered_inputs['firstName'] = "something";
您要求的问题：
其次；您的var\u dump（$this->filtered\u输入）问题不输出数据，在变量被赋予任何值之前调用并转储变量
阅读表单/HTML代码；您正在调用$filter->insertAll（）之前编写
，调用
filterFirstName（）将表单提交到表单来源的同一页面是不好的表单；如果我刷新页面，则每次都会重新提交
$\u POST此外，您似乎没有任何代码将数据发送到MySQL数据库，可能您只是没有显示它，但您确实有SQL字符串（
$query $this->connection->query($query);
简化您的代码： 改进是一项持续不断的工作，您的问题似乎是您正在为表单提供给PHP的每个输入编写
hardcode这段代码可以进一步简化，提高效率，但我只想给你们一个开始；现在，该函数将用每个POST语句无需填充您的
->filtered_inputsfirstNameclass Filtering {
...
var $connection;
public function connect() {
$this->connection= mysqli_connect($this->DBHostName, $this->DBUserName, $this->DBPassword, $this->DBName);
$this->class Filtering {
var $connection = "something"; // var is optional and not really needed.
$DBHostName = "host";
$DBUserName = "user";
$DBPassword = "pass";
// Etc.
接下来，您将了解全球使用情况。因此，使用
global$this->$this public function filterFirstName() {
$this->filtered_inputs['firstName'] = "something";
您要求的问题： 其次；您的
var\u dump（$this->filtered\u输入）问题不输出数据，在变量被赋予任何值之前调用并转储变量
阅读表单/HTML代码；您正在调用$filter->insertAll（）之前编写
，调用将表单提交到表单来源的同一页面是不好的表单；如果我刷新页面，则每次都会重新提交
$\u POST此外，您似乎没有任何代码将数据发送到MySQL数据库，可能您只是没有显示它，但您确实有SQL字符串（
$query $this->connection->query($query);
简化您的代码： 改进是一项持续不断的工作，您的问题似乎是您正在为表单提供给PHP的每个输入编写
hardcode