在输入表单时跟踪客户端IP地址并存储在SQL表中

Question

我有PHP表单处理数据到sql表我有两个输入字段

• 我需要一个隐藏字段，隐藏字段应该跟踪客户端IP地址，当提交表单时，我需要客户端地址也保存在表中

PHP表单处理

<?php
$db_username = "sanoj";
$db_password = "123456";
try {
#connection 
$conn = new PDO('mysql:host=localhost;dbname=localtest', $db_username, $db_password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$data = $conn->prepare('INSERT INTO test (first, last) VALUES (:first, :last)');
$first = filter_input(INPUT_POST, 'first', FILTER_SANITIZE_STRING);
$last = filter_input(INPUT_POST, 'last', FILTER_SANITIZE_STRING);
$data->execute(array(':first' => $first, ':last' => $last,));
#exception handiling
} catch (PDOException $e) {
echo $e->getMessage();
}
?>

有些人可以帮助我，我找到了例子，很难理解What is the most accurate way to retrieve a user's correct IP address in PHP?中给出的这些代码，因为刚开始提前感谢

Answer 1

我会用它来检索某人的IP

$_SERVER["REMOTE_ADDR"]

Answer 2

$REMOTE_ADDR = $_SERVER['REMOTE_ADDR'];/*add this line*/
$data->execute(array(':first' => $first, ':last' => $last, ':REMOTE_ADDR' => $REMOTE_ADDR));/* edit this line*/