how to bind multiple parameters to MySQLi query [closed]

Question

I have a mysql query, but I can't bind param for it

SELECT users.email,users.handle,userprofile.mobile FROM users,userprofile WHERE users.email =? OR users.handle =? OR userprofile.mobile=? 

I've tried below line

$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 '......';     } } 

but I've received and error :

Warning: mysqli_stmt::bind_param(): Number of elements in type definition string doesn't match number of bind variables

Answer 1

This is the correct syntax for binding params in mysqli

$SQL = "SELECT                users.email,               users.handle,               userprofile.mobile          FROM users,userprofile               WHERE users.email =? OR users.handle =? OR userprofile.mobile=?";  $stmt = $mysqli->prepare($SQL);     $stmt->bind_param("sss", $one,$two,$three); $stmt->execute();  //do stuff