Implement $data=str_replace(" ",",",$data);

I need some guidance on how to correctly implement the line:
$data=str_replace(" ",",",$data);
Where do I add it, and do I need other commands, for example function (){ ?

Thanks

 

I really don't understand what you mean.

 

$data is your string
str_replace(old,new,string);


So if you want to replace the character A in $data with an underscore:

$data= str_replace('A','_',$data);


Now $data has no A characters, they are now underscores.

 

Yes, I understand this.
I'm using this line to remove the space between words in a search query so that rss feeds do not break. Spaces cause the feeds to return an error. For example, "music album" needs to be "music,album".
But, I don't know where to add this line in my search engine script.
Where does it usually go?
Is it accompanied by other commands?

Thanks

 

Didn't I solve this problem in the other thread?

 

Yes, you did!

 

so is this solved or do you still need help?