I'm making a private messaging system.
But I got the error message just like this again an again.
Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given in C:\wamp\www\post\includes\pm_send.php on line 12
pm_send.php code is here
<?php
session_start();
require_once "connect.php";
$sql = "SELECT id, email FROM users WHERE showing='1'";
$result = mysql_query($sql);
$options = "";
$email = $_SESSION['email'];
while ($row=mysql_fetch_array($result)){
$USERid = $row['id'];
$USERname = $row['email'];
$option.="<OPTION VALUE=\"$USERid\">".$USERname."</OPTION>";
}
?>
How to fix it?