Base64 plus signs

Base64 plus signs (+) in the URL passed after base64 are changed to space links and cannot be correctly redirected. functions of the urlencode class cannot be used, only spaces in the string can be replaced with the plus sign on the receiving page. how can I replace them? Note that there is a space here, not % 20 ------ solution ------------------ $ urlstr_ireplace (, +, $ var); base64 plus sign
After base64, all the plus signs in the uploaded URL become space links and cannot jump correctly. you cannot use urlencode functions. you can only replace the spaces in the strings with the plus signs on the receiving page, how can I replace it?

Note that this is a space, not % 20

------ Solution --------------------
$ Url = str_ireplace ('', '+', $ var );