Mysqli Multi Query Or A better Alternative - php

Question

I have an appointment database and I can successfully print the data. What I want to do now is limit the appointments that are shown to the result from query 1.
I currently get two errors the first one is unexpected query and the other error is Fatal error: Function name must be a string. How would i rewite it so that both queries work? or an alternative better way to get this working
<?php
//MySqli Databse Connection
require "id.php";
require "calendarconnect.php";
//MySqli Select Query 1
$lep = $mysqli->query("SELECT lep FROM appointments WHERE ID = $contactid");
$line = mysqli_fetch_array($query1, MYSQL_ASSOC);
//MySqli Select Query 2
$query = $mysqli->query("SELECT ID, appointment, nature, doctorname, lep FROM appointments WHERE lep = $line ORDER BY appointment");
print '<table cellpadding="10" cellspacing="3" border="1" class="sortable">';
print '<tr><th>Date/Time</th><th>Nature</th><th>Doctor Name</th><th>Actions</th></tr>';
while($row = $query->fetch_assoc()) {
print '<tr>';
print "<td>" . date('m-d-y g:i A', strtotime($row['appointment'])) . "</td>";
print '<td>'.$row["nature"].'</td>';
print '<td>'.$row["doctorname"].'</td>';
print "<td>Edit | ";
print "<a href=\"appointmentdelete.php?id=" . $row['ID'] . "\"onclick=
\"return confirm('Are you sure you want to delete?')\">Delete</a></td>";
print '</tr>';
}
print '</table>';
require "freeclose.php";
?>

Answer 1

Its not necessary to do it with 2 Querys. So you not must transfer the result from Query 1 to the client to put in in the second.
Try this:
SELECT b.ID, b.appointment, b.nature, b.doctorname, b.lep
FROM appointments a
LEFT JOIN appointments b ON b.lep = a.lep
WHERE a.ID = $contactid
ORDER BY b.appointment;