Displaying data from database in a Dropdown Menu - php

Question

I have successfully got my php code to connect to my database and retreieve data and display it. I am now trying to take this data and display it in a dropdown menu, however when I do this the dropdown menu displays the correct number of options that correlates with the data in the database(ie. it gives three options if there is 3 values in the db). But it doesn't display the text all the options are blank. Any ideas as to why it is not displaying the text?
<?php
$dbhost= 'Host IP';
$dbuser ='My Username';
$dbpass = 'password';
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
$sql='SELECT event_id FROM events';
mysql_select_db('db_name');
$retval= mysql_query($sql, $conn);
echo'<select name=dropdown value=', '>Dropdown</option>';
while($r= mysql_fetch_array($retval))
{
echo "<option value={$r["event_id"]}>{$r["events"]}</option>";
}
echo "</select>";
?>
http://i.imgur.com/30Uq0Ok.png
The link is what the menu currently returns
Thanks

Answer 1

You did not select events from database. You need to select all(*) or required columns by its name in the query .
Change your query:
$sql='SELECT event_id FROM events';
to :
$sql='SELECT * FROM events';
You also need to take option value inside quotes.
Change this line inside loop:
echo "<option value={$r["event_id"]}>{$r["events"]}</option>";
to:
echo "<option value=\"{$r['event_id']}\">{$r['events']}</option>";

Answer 2

try it like this (change your query to select *)
echo '<option value='.$r["event_id"].'>'.$r["events"].'</option>';

Answer 3

You are just selecting event_id from the table. So, $r["events"] is always empty.
Select the title field, too.
<?php
$dbhost= 'Host IP';
$dbuser ='My Username';
$dbpass = 'password';
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
$sql='SELECT event_id,event_title FROM events';
mysql_select_db('db_name');
$retval= mysql_query($sql, $conn);
echo'<select name=dropdown value=', '>Dropdown</option>';
while($r= mysql_fetch_array($retval))
{
echo "<option value={$r["event_id"]}>{$r["event_title"]}</option>";
}
echo "</select>";
?>
I assumed, that the field name is "event_title".