Making a link from variables with spaces in (PHP)

[theMAD2]

I am passing variables from a form to make a link, but one of the fields may contain spaces. Is there anyway to convert the spaces in the string when making the link into the "%20" bit?

Thanks,

 

[theMAD2]

Just found that too. Does this work with or instead of htmlentities() ?

 

[theMAD2]

Thanks everyone, it's worked a treat! Good ole PHP, eh