How can I easily remove the last comma from an array?

Question

Let's say I have this:

$array = array("john" => "doe", "foe" => "bar", "oh" => "yeah");

foreach($array as $i=>$k)
{
echo $i.'-'.$k.',';
}

echoes "john-doe,foe-bar,oh-yeah,"

How do I get rid of the last comma?

Answer 1

Alternatively you can use the rtrim function as:

$result = '';
foreach($array as $i=>$k) {
    $result .= $i.'-'.$k.',';
}
$result = rtrim($result,',');
echo $result;