我不断收到这些错误:双mysqli_query()预计参数1是mysqli的,空给予警告
警告:mysqli_query()预计参数1是mysqli的,空给出 /家庭/ u590953899 /的public_html /应用程序/注册上线/ index.php的95
警告:mysqli_error()期望的是1个参数,0在 /home/u590953899/public_html/app/signup/index.php给出上线95
Line 95:
$result1 = mysqli_query($mysqli,$sql1) or die(mysqli_error());
整个代码:
<?php
session_start();
$mysqli1=mysqli_connect('localhost','u590953899_staff','DCr102404$','u590953899_dev') or die("Database Error");
if(isset($_POST['submit']))
{
//whether the username is blank
if($_POST['username'] == '')
{
$_SESSION['error']['username'] = "User Name is required.";
}
else
{
//if it has the correct format whether the email has already exist
$username= $_POST['username'];
$sql1 = "SELECT * FROM user WHERE username = '$username'";
$result1 = mysqli_query($mysqli,$sql1) or die(mysqli_error());
if (mysqli_num_rows($result1) > 0)
{
$_SESSION['error']['username'] = "This username is already taken.";
}
}
//whether the email is blank
if($_POST['email'] == '')
{
$_SESSION['error']['email'] = "E-mail is required.";
}
else
{
if(preg_match("/^([a-zA-Z0-9])+([a-zA-Z0-9._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9._-]+)+$/", $_POST['email']))
{
//if it has the correct format whether the email has already exist
$email= $_POST['email'];
$sql1 = "SELECT * FROM user WHERE email = '$email'";
$result1 = mysqli_query($mysqli,$sql1) or die(mysqli_error());
if (mysqli_num_rows($result1) > 0)
{
$_SESSION['error']['email'] = "This Email is already used.";
}
}
else
{
//this error will set if the email format is not correct
$_SESSION['error']['email'] = "Your email is not valid.";
}
}
//whether the password is blank
if($_POST['password'] == '')
{
$_SESSION['error']['password'] = "Password is required.";
}
//if the error exist, we will go to registration form
if(isset($_SESSION['error']))
{
header("Location: http://app.bithumor.co/signup/");
exit;
}
else
{
$username = $_POST['username'];
$email = $_POST['email'];
$password = $_POST['password'];
$com_code = md5(uniqid(rand()));
$ip = $_SERVER['REMOTE_ADDR'];
$sql2 = "INSERT INTO user (username, email, password, com_code) VALUES ('$username', '$email', '$password', '$com_code')";
$result2 = mysqli_query($mysqli1,$sql2) or die(mysqli_error());
我到处去寻找解释/解决方案,但没有什么工作。
我固定的但它仍然不起作用 –
你仍然得到相同的错误?错误说$ mysqli为null,这意味着你必须确保mysqli_connect是正确的。 –