HTML Form Select and Arrays, PHP

Question

I have a form with multiple rows and multiple "select" drop-down menus in each row. For simplicity I am showing 2x2 in this example but in reality it could go up to 5x5.

In simplified form, my HTML form looks like this:

<form action="aaa2.php" method="post" name="book">

<?php $roomNumber=101; ?> 
Normal Occupancy 
<select name="occupancy[101]"> 
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
Extra Beds
<select name="extrabed[101]"> 
<option value="1">1</option>
<option value="2">2</option>
</select>
<br><br>
<?php $roomNumber=101; ?>
Normal Occupancy 
<select name="occupancy[102]"> 
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
Extra Beds
<select name="extrabed[102]"> 
<option value="1">1</option>
<option value="2">2</option>
</select>
<br><br>

<input name="Submit" type="submit" value="submit">
</form>

On the next page, I can easily display the information from the first drop-down:

<?php 
$occupancy_array=$_POST['occupancy'];
foreach($occupancy_array as $roomNumber=>$occupancy) {
echo "Room ".$roomNumber.". Normal occupancy is ".$occupancy.".<br>";   
}
?>

My problem comes when I try to use the information from the second drop-down. I've got this far

<?php 
$occupancy_array=$_POST['occupancy'];
$extrabed_array=$_POST['extrabed'];
foreach($occupancy_array as $roomNumber=>$occupancy) {
echo "Room ".$roomNumber.". Normal occupancy is ".$occupancy." and the room will take ".$extrabed." extra beds.<br>";   
}
?>

but obviously I need another foreach line for the second array. I've tried it in series and I've tried it nested inside the first foreach, but neither works right. Is there a way that I can combine it all into one foreach? Or how should I do it?

Yes. I need to be able to construct the next page with occupancy and extra bed information for each roomNumber. — TrapezeArtist
– TrapezeArtist, Commented Oct 25, 2013 at 17:01
So what's the problem? You don't want to have two foreachs? — MahanGM
– MahanGM, Commented Oct 25, 2013 at 17:02
I think I got your point. You can use $roomNumber to access extra beds. Something like $extrabed_array[$roomNumber] in your foreach. — MahanGM
– MahanGM, Commented Oct 25, 2013 at 17:04

kelunik · Accepted Answer · 2013-10-25 17:05:08Z

2

Try this:

<?php 

$occupancy_array=$_POST['occupancy'];
$extrabed_array=$_POST['extrabed'];

foreach($occupancy_array as $roomNumber => $occupancy) {
    echo "Room $roomNumber. Normal occupancy is $occupancy and the room will take ".$extrabed_array[$roomNumber]." extra beds.<br>";   
}

You should take care to injections, because any user can send a request with

occupancy[<script>...</script>] = <script>...</script>

answered Oct 25, 2013 at 17:05

kelunik

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2 Comments

TrapezeArtist Over a year ago

Thanks Recode. That worked perfectly. Now I'm going to charge on putting that logic into the real thing. I take your point about injections, but this was just a very simple example to address my problem. I cut out all the superfluous stuff.

kelunik Over a year ago

@TrapezeArtist yes, it was just a notice, there are enough people forgetting that.

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