OK, I have an answer to my question, but I was wondering if there was a quicker way than my solution...
my example uses only 2 dimensions for simplicity:
$array=array(
0 => array("class"=>"11.104", "img_format"=>"jpg"),
1 => array("class"=>"13.2", "img_format"=>"gif"),
2 => array("class"=>"8.215", "img_format"=>"png")
);
what I want to do is implode ONLY the values of the 'class' key.
My solution at the moment is to put the values of that key into a single dimension array and implode() that:
foreach($array as $v1) {
foreach ($v1 as $key => $value) {
if($key=='class') $class_array[]=$value;
}
}
$class=implode(", ", $class_array);
echo $class;
Is there an easier way, because my code at the moment to do that with the actual array is rather large!