SQL order by date inside WHILE LOOP - php

Question

I'm having trouble sorting my events by date, as I have event id's in one table and event date in another.
The code is as follows.
$getEventIds = "SELECT * FROM rz6wq_ohanah_registrations WHERE email='".$userEmail."'";
$result = mysqli_query($conn, $getEventIds);
echo '<br />';
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc()) {
$getEventTitle = "SELECT * FROM rz6wq_ohanah_events WHERE ohanah_event_id=" . $row['ohanah_event_id'] . " ORDER BY date ASC";
$title = mysqli_query($conn, $getEventTitle);
$rowTitle = $title->fetch_assoc();
$originalDate = $rowTitle["date"];
$newDate = date("d-m-Y", strtotime($originalDate));
date_default_timezone_set('Europe/Copenhagen');
$currentDate = date('d/m/Y');
if(strtotime($currentDate) < strtotime($newDate)){
//echo "id: " . $row["ohanah_event_id"] . "<br>";
echo "<div class='eventsTilmeldt'>";
echo "<b>" . utf8_encode($rowTitle["title"]) . "</b><br>";
echo "<br>";
echo "Status: "; if($row["paid"] == 0){echo "<span style='color:red;'>ej betalt</span>";}else{echo "<span style='color:green;'>betalt</span>";}
echo "<br>";
echo "Dato: " . $newDate . "<br>";
echo "Tidspunkt: " . $rowTitle["start_time"] . "<br>";
echo "<br>";
echo "Adresse: " . utf8_encode($rowTitle["adress"]) . "<br>";
echo "By: " . utf8_encode($rowTitle["geolocated_city"]) . "<br>";
echo "Sted: " . utf8_encode($rowTitle["venue"]) . "<br>";
echo "</div>";
echo "<br>";
}else{
echo "";
}
}
} else {
echo "Ingen tilmeldte events.";
}
The issue that it doesen't sort my event's correctly by date. I figure it has something to do with it being inside the while loop where I order by date?
"SELECT * FROM rz6wq_ohanah_events WHERE ohanah_event_id=" . $row['ohanah_event_id'] . " ORDER BY date ASC";
I need to get the event's from another table first, called registrations - inside this table there is no date field.
How can I sort this list by date ?

Answer 1

You can use JOIN instead:
$getEventIds = "SELECT reg.*,event.* FROM rz6wq_ohanah_registrations as reg
JOIN rz6wq_ohanah_events as event ON reg.ohanah_event_id=event.ohanah_event_id
WHERE email='".$userEmail."'
ORDER BY event.date ASC";

Answer 2

Why use two query You can do it in single query
SELECT A.*,B.* FROM rz6wq_ohanah_registrations AS A JOIN
rz6wq_ohanah_events AS B ON A.ohanah_event_id=B.ohanah_event_id WHERE
A.email='".$userEmail."' ORDER BY B.date ASC

Answer 3

$getEventIds = "SELECT * FROM rz6wq_ohanah_registrations AS ROR, z6wq_ohanah_events AS ZOE WHERE ROR.ohanah_event_id = ZOE.ohanah_event_id AND ZOE.email = '" . $userEmail . "' ORDER BY date ROR.ASC";