php explode by commas but leave spaces

Example String; this is a test, here, is, another one, ok

result on explode I would like it to separate it as

this is a test
another one

when I use explode it ignores this. Here is my code $keyword = explode(',',$keywords);

maybe I need to use split?
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use trim on each string returned
cbielichAuthor Commented:
Can you give me an example
F IgorDeveloperCommented:
$keyword = explode(',',$keywords);
foreach ($keyword as $key=>$value){

if you want to replace commas with new lines so you can get
a list of lines with every item:

$keyword = explode(',',$keywords);
foreach ($keyword as $key=>$value){

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$keyword_arr = explode(',',$keywords);

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Lukasz ChmielewskiCommented:
This seems to be ok, the printing shows every string separated

$keywords = "this is a test, here, is, another one, ok";
$keyword = explode(',',$keywords);


foreach($keyword as $key => $val){
    echo"<br />$val";

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I don't understand exactly what you need but is this what you are looking for

echo implode('<br>', array_map('trim', explode(',',"this is a test, here, is, another one, ok")));
If you want a one line way of doing it use str_replace.
It can take all the commas and replace them with <br/>
like this

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The link for the php manual on how to do it is
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