PHP explode array then loop through values and output to variable

Question

The string I am trying to split is $item[\'category_names\'] which for example contains Hair, Fashion, News

I currently have the following

Answer 1

if you use this:

$cats = explode(", ", $item['category_names']);
foreach($cats as $cat) {
$categories = "" . $cat . "\n";
}

the $categories string is overwritten each time, so "hair" and "fasion" are lost..

if you however add a dot before the equal sign in the for loop, like so:

$cats = explode(", ", $item['category_names']);
foreach($cats as $cat) {
$categories .= "" . $cat . "\n";
}

the $catergories string will consist of all three values :)