我认为我的数据库处理程序类有问题。我的 index.php 文件中有一个表单标签，它调用 inc/function.php 中的一个函数，然后将表单数据保存到数据库中的一个表中。问题是，我不工作，我找不到错误。如果您希望我提供更多信息，请这样说:)
没有错误，除了每当我在函数中添加行 $dbh->query($sql) 时，整个表单都会消失：/
索引.php：
<form id="signform" action="<?php addSignature($dbh) ?>" method="post">
<h1>SIGN THE PROPOSED CITIZENS’ INITIATIVE</h1>
<input type="text" name="firstname" placeholder="Full first name"><br/>
<input type="text" name="familynames" placeholder="Family name"><br/>
<input type="text" name="dateofbirth" placeholder="Date of birth"><br/>
<input type="text" name="placeofbirth" placeholder="Place of birth"><br/>
<select name="nationality">
<option value="" disabled selected>Nationality</option>
<option value="Denmark" >Denmark</option>
</select>
<hr>
<textarea name="address" placeholder="Address (street, number, other)"></textarea><br/>
<input type="text" name="postalcode" placeholder="Postal code"><br/>
<input type="text" name="city" placeholder="City"><br/>
<select name="country">
<option value="" disabled selected>Country</option>
<option value="Denmark" >Denmark</option>
</select>
<hr>
<div id="radiobuttons">
<input class="radiobutton" type="checkbox" name="certify"><span class="radiobuttonText">I hereby certify that the information provided in this
form is correct and that I have not already supported
this proposed citizens’ initiative.</span><br/><br/>
<input class="radiobutton" type="checkbox" name="privacy"><span class="radiobuttonText">I have read the privacy statement.</span>
</div>
<button type="submit" value="">SIGN UP</button>
</form>
DbH.php：
<?php
//DATABASE HANDLER
class DbH{
private $connection;
private $host;
private $database;
private $user;
private $password;
private $result;
public function __construct($database, $host='localhost', $user='root', $password='blabla'){
$this->database = $database;
$this->host = $host;
$this->user = $user;
$this->password = $password;
$this->connect();
}
private function connect(){
try{
if(!$this->connection = mysql_connect($this->host, $this->user, $this->password)){
throw new Exception("No connection to the MySQL server.");
}
if(!mysql_select_db($this->database, $this->connection)){
throw new Exception("No connection to the MySQL database.");
}
}
catch(Exception $e){
die($e->getMessage());
}
}
function query($declaration){
try{
if(!$this->result=mysql_query($declaration, $this->connection)){
throw new Exception("SELECT ERROR</ br>{$declaration}");
}
}
catch(Exception $e){
die($e->getMessage());
}
}
function fetch_array(){
return $rowArray = @mysql_fetch_array($this->result);
}
function getDb(){
return $this->database;
}
function getConnection(){
return $this->connection;
}
}
?>
函数.php：
<?php
function addSignature($dbh){
if(!isset($_POST['firstname'], $_POST['familynames'], $_POST['dateofbirth'], $_POST['placeofbirth'], $_POST['nationality'], $_POST['address'], $_POST['postalcode'], $_POST['city'], $_POST['country'])){
$_POST['firstname'] = 'undefine';
$_POST['familynames'] = 'undefine';
$_POST['dateofbirth'] = 'undefine';
$_POST['placeofbirth'] = 'undefine';
$_POST['nationality'] = 'undefine';
$_POST['address'] = 'undefine';
$_POST['postalcode'] = 'undefine';
$_POST['city'] = 'undefine';
$_POST['country'] = 'undefine';
}
$firstname = mysql_real_escape_string($_POST['firstname']);
$familynames = mysql_real_escape_string($_POST['familynames']);
$dob = mysql_real_escape_string($_POST['dateofbirth']);
$pob = mysql_real_escape_string($_POST['placeofbirth']);
$nationality = mysql_real_escape_string($_POST['nationality']);
$address = mysql_real_escape_string($_POST['address']);
$postalcode = mysql_real_escape_string($_POST['postalcode']);
$city = mysql_real_escape_string($_POST['city']);
$country = mysql_real_escape_string($_POST['country']);
$sql = 'INSERT INTO signatures (id, firstname, familynames, dob, birthplace, nationality, address, postalcode, city, country)';
$sql .= sprintf(' VALUES ("%s", "%s", "%s", "%s", "%s", "%s", "%s", "%s", "%s")', $firstname, $familynames, $dob, $pob, $nationality, $address, $postalcode, $city, $country);
$dbh->query($sql);
}
?>