我有这个功能,可以将复选框中的数据插入到我的 sql 数据库中,它只是查找,但我对此很陌生,所以我想知道是否有更好/更安全(来自 sql 注入)的方法来做到这一点。我知道我应该将 PDO 与准备好的语句一起使用,但这是我稍后要解决的问题。
这是生成 html 复选框的表单:
<form action="" method="post">
<?php
if(empty($clients) === true){
echo '<p>You do not have any clients yet.</p>';
}
else
{
foreach($clients as $client){
echo'
<input type="checkbox" name="client_data[]" value="'.$_SESSION['user_id'].'|'.$class_id.'|'.$client['first_name'].'|'.$client['nickname'].'|'.$client['last_name'].'">
'.$client['first_name'].' ('.$client['nickname'].') '.$client['last_name'].'
<br />';
} // foreach($client
} // if empty
?>
这是调用该函数的php:
if (isset($_POST['exist_to_class'])){
if (empty($_POST['client_data']) === true){
$errors [] = 'You much select a client to be added to the class.';
} else {
if (isset($_POST['client_data']) && !empty($_POST['client_data']));
foreach ($_POST['client_data'] as $cd){
exist_client_to_class($cd);
header('Location: view_class.php?class_id='.$class_id.' ');
} // foreach $cd
} // else
} //isset
这是我将数据插入数据库的函数:
// add existing client to class ----------------------------------------------------
function exist_client_to_class($cd){
list($user_id, $class_id, $first_name, $last_name, $nickname) = explode('|', $cd);
mysql_query("INSERT INTO `clients` (user_id, class_id, first_name, last_name, nickname, date)
VALUES('$user_id', '$class_id', '$first_name', '$last_name', '$nickname', CURDATE())");
}
第一次尝试 PDO 准备好的语句:UPDATE
function exist_client_to_class($cd){
try{
$stmt = $conn->prepare('INSERT INTO clients
(user_id, class_id, first_name, last_name, nickname, date)
VALUES (:user_id, :class_id, :first_name, :last_name, :nickname, CURDATE())
');
list($user_id, $class_id, $first_name, $last_name, $nickname) = explode('|', $cd);
$stmt->execute(array(
':user_id' => $user_id,
':class_id' => $class_id,
':first_name' => $first_name,
':last_name' => $last_name,
':nickname' => $nickname
)
);
}
catch(PDOException $e) {
echo 'Error: ' . $e->getMessage();
}
}
这是数据库连接文件:
//PDO database connect
try {
$conn = new PDO('mysql:host=localhost;dbname=customn7_cm', '**********', '**********');
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$conn->exec("SET CHARACTER SET utf8");
} catch(PDOException $e) {
echo 'ERROR: ' . $e->getMessage();
}