Description:
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The "URL Generic Syntax" specification (RFC 2396) says that URLs must be US-ASCII. However, the PHP urlencode/decode functions return/accept binary data only. I think the correct behaviour would be to use Unicode (which is a superset of ASCII) for the encoded values.

(This might affect some other URL-related functions, but urlencode/urldecode are the only ones that I know)

See also bug 45566 . Since it's quite likely for urldecode's input to come from the $_SERVER superglobal, I think either both or none of the bugs should be fixed.


Reproduce code:
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<?php
echo urldecode("%50%48%50\n");

Expected result:
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PHP

Actual result:
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PHP Warning:  urldecode() expects parameter 1 to be strictly a binary string, Unicode string given in - on line 3

Warning: urldecode() expects parameter 1 to be strictly a binary string, Unicode string given in - on line 3