I have got a problem with testing out if a string exists in my database!
This is what I've got so far:
$db = mysqli_connect("localhost", "database", "secret", "user");
if(!$db)
{
exit("Error: ".mysqli_connect_error());
}
$search = 'SELECT * FROM table WHERE ip = $client_ip';
$result = mysqli_query($db, $search);
while($row = mysqli_fetch_object($result)) {
if (isset($row->blocked)) {
echo 'You are blocked!';
} else {
echo 'You are not blocked!';
}
But this won't work for me. $client_ip is defined correctly before.
您需要将$client_ip
用引号引起来,因为它是一个字符串:
$search = "SELECT * FROM table WHERE ip = '$client_ip'";
试试这个:
$search = "SELECT * FROM table WHERE ip = '{$client_ip}'";
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.