Last iteration of PHP foreach loop code change - php

Question

I have a block of code thats working perfectly to pull data about different office locations.
What I would like to do is be able to make the last iteration of this loop change the div class to something else so I can apply a different set of css styles.
$fields = get_group('Offices');
foreach($fields as $field){
echo'<div class="oloc">';
if($locationVar==NULL || $locationVar!=$field['office-location'][1]) {
echo '<a name="' . strtolower(str_replace(' ', '-', $field['office-location'][1])) . '"></a><h3>' . $field['office-location'][1] . '</h3>';
$locationVar = $field['office-location'][1];
} else {
echo "<br />";
}
if($field['office-gm'][1]){
echo '<div class="gm"><img src="http://maps.googleapis.com/maps/api/staticmap?center=' . $field['office-gm'][1] . '&zoom=9&size=250x250&markers=color:blue|label:A|' . $field['office-gm'][1] . '&sensor=false"></div>';
}
if($field['office-name'][1]){
echo '<strong>' . $field['office-name'][1] . '</strong><br /><br />';
}
if($field['office-phone'][1]){
echo 'Phone: ' . $field['office-phone'][1] . '<br />';
}
if($field['office-fax'][1]){
echo 'Fax: ' . $field['office-fax'][1] . '<br />';
}
if($field['office-address'][1]){
echo '<br />Address:<br />' . strip_tags($field['office-address'][1], '<br><br />') . '<br />';
}
if($field['office-webpage'][1]){
echo 'Web: ' . 'Office Webpage<br />';
}
if($field['office-email'][1]){
echo 'Email: ' . 'Office Email<br />';
}
if($field['office-emp'][1]){
echo 'Jobs: ' . 'Employment Application<br />';
}
if($field['office-fb'][1]){
echo 'Facebook: ' . 'Facebook<br />';
}
if($field['office_office_twitter'][1]){
echo 'Twitter: ' . 'Twitter<br />';
}
echo '</div>';
}

Answer 1

For cases like these you can use a CachingIterator and the hasNext() method:
$fields = get_group('Offices');
$it = new CachingIterator(new ArrayIterator($fields));
foreach($it as $field)
{
...
if (!$it->hasNext()) echo 'Last:';
...
}

Answer 2

Put every echo in a var, this class definition in a other var. Then at the end of your foreach you check like so:
$i = 0;
foreach(...
if( $i == count($fields) ) { // change class }

Answer 3

Try this
$i = 0;
$total = count($fields);
$final = false;
foreach($fields as $field){
$i++;
$final = ($i + 1 == $total)? true : false;
if($final)
echo'<div class="NEW_CLASS">';
else
echo'<div class="oloc">';
....
}

Answer 4

First you should get the total count of the offices so that when you are on the last iteration, you can do something about it.
$fields = get_group('Offices');
$fields_count = count($fields);
$i = 0;
foreach ($fields as $field) {
$is_final = ++$i == $fields_count;
echo '<div class="oloc' . ($is_final ? ' oloc-final' : '') . '">';
[...]
}