Remove any comma before or after a string?

Question

My string is

$string = ",name2,name2,name3,";

I want to make it like;

$string = "name2,name2,name3";

That is, to remove first and last comma from that string, any clue as to how to accomplish this either through regex or anything else?

Thanks.

justhalf · Accepted Answer · 2018-08-03 21:14:19Z

51

If you just want to remove the first and the last comma, you can use trim

$string = trim($string,",");

answered Sep 3, 2013 at 10:32

9,1344 gold badges51 silver badges79 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Thanks @coder for the suggestion on the usage of trim.

Tim Pietzcker · Accepted Answer · 2013-09-03 10:32:28Z

You can use anchors for this:

$result = preg_replace('/^,|,$/', '', $subject);

If you want to match one or more commas at the start/end of the string:

$result = preg_replace('/^,+|,+$/', '', $subject);

And if there could be whitespace around those leading/trailing commas:

$result = preg_replace('/^[,\s]+|[\s,]+$/', '', $subject);

Thanks Tim, I didn't used your method but looks like you've got the point too. Unfortunately I've to pick only one answer as best. Thanks every one! :)