<?php
error_reporting(0);
$username = $_POST['username'];
$password = $_POST['password'];
$email = $_POST['email'];
require_once('dbConnect.php'); $check = "SELECT * FROM users (username,password,email) WHERE username = '$username'";
$result = mysqli_query($con,$check);
$number = mysqli_num_rows($result);
$sql = "INSERT INTO users (username,password,email) VALUES ('$username','$password','$email')"; if($number==0){
if(mysqli_query($con,$sql))
{
echo "successfully Register";
} else {
echo 'database error';
}
} else {
echo "username exist";
}
?>
$check = "SELECT * FROM users WHERE username = '$username'";
难受啊
改
$check = "SELECT * FROM users WHERE username = '$username'" limit 1;