我有一个mysql查询,但我不能绑定param
SELECT users.email,users.handle,userprofile.mobile FROM users,userprofile WHERE users.email =? OR users.handle =? OR userprofile.mobile=?
我试过下面的行
$query = "SELECT users.email,users.handle,userprofile.mobile FROM users,userprofile WHERE users.email =? OR users.handle =? OR userprofile.mobile=?";
$stmt = $mysqli->prepare($query);
$stmt->bind_param("sss",$email,$username,$mobile);
if ($stmt->execute()) {
if($stmt->num_rows){
echo '......';
}
}
但我收到和错误：
Warning: mysqli_stmt::bind_param(): Number of elements in type
definition string doesn’t match number of bind variables
