<分区>
我正在尝试编写执行以下操作的脚本。获取用户电子邮件并将其添加到数据库中,但是如果用户电子邮件已经存在,它会拒绝。
<?
require_once('includes/db.php');
$email = mysqli_real_escape_string($link, $_POST['email']);
$dupesql = "SELECT * FROM emails where (email = '$email')";
$duperaw = mysqli_query($link, $dupesql);
if(int mysql_num_rows($duperaw) > 0){
echo 'Error already in there';
}
else {
$sql = "INSERT INTO emails(email)
VALUES('$email')";
$result = mysqli_query($link, $sql);
header('Location: poll/poll.php');
}
// close mysql
mysqli_close($link);
?>