- rtrim: documentation ( source)
<?php
$cars=array("Dodge"=>array("Avenger","Challenger","Charger","Dart"),"Toyota"=>array("Highlander","Tundra","Corolla"),"Nissan"=>array("Sentra","Altima","Maxima"));
echo "Make: Toyota";
echo "<br><br>";
$toyota = '';
foreach($cars['Toyota'] as $car) {
$toyota .= $car.',';
}
echo rtrim($toyota, ',');
?>