Fix #80114: parse_url does not accept URLs with port 0

URIs with a 0 port are generally valid, so `parse_url()` should
recognize such URIs, but still report the port as missing.

Co-authored-by: twosee <twose@qq.com>

Closes phpGH-6152.

Author: cmb69

NEWS

@@ -12,6 +12,9 @@ PHP                                                                        NEWS
   . Fixed bug #80083 (Optimizer pass 6 removes variables used for ibm_db2 data
     binding). (Nikita)
 
+- Standard:
+  . Fixed bug #80114 (parse_url does not accept URLs with port 0). (cmb, twosee)
+
 01 Oct 2020, PHP 7.3.23
 
 - Core:

ext/standard/tests/url/parse_url_basic_001.phpt

@@ -859,6 +859,15 @@ echo "Done";
   string(3) "%:x"
 }
 
+--> https://example.com:0/: array(3) {
+  ["scheme"]=>
+  string(5) "https"
+  ["host"]=>
+  string(11) "example.com"
+  ["path"]=>
+  string(1) "/"
+}
+
 --> http:///blah.com: bool(false)
 
 --> http://:80: bool(false)

ext/standard/tests/url/parse_url_basic_002.phpt

@@ -113,6 +113,7 @@ echo "Done";
 --> /   : NULL
 --> /rest/Users?filter={"id":"123"}   : NULL
 --> %:x   : NULL
+--> https://example.com:0/   : string(5) "https"
 --> http:///blah.com   : bool(false)
 --> http://:80   : bool(false)
 --> http://user@:80   : bool(false)

ext/standard/tests/url/parse_url_basic_003.phpt

@@ -112,6 +112,7 @@ echo "Done";
 --> /   : NULL
 --> /rest/Users?filter={"id":"123"}   : NULL
 --> %:x   : NULL
+--> https://example.com:0/   : string(11) "example.com"
 --> http:///blah.com   : bool(false)
 --> http://:80   : bool(false)
 --> http://user@:80   : bool(false)

ext/standard/tests/url/parse_url_basic_004.phpt

@@ -112,6 +112,7 @@ echo "Done";
 --> /   : NULL
 --> /rest/Users?filter={"id":"123"}   : NULL
 --> %:x   : NULL
+--> https://example.com:0/   : NULL
 --> http:///blah.com   : bool(false)
 --> http://:80   : bool(false)
 --> http://user@:80   : bool(false)

ext/standard/tests/url/parse_url_basic_005.phpt

@@ -112,6 +112,7 @@ echo "Done";
 --> /   : NULL
 --> /rest/Users?filter={"id":"123"}   : NULL
 --> %:x   : NULL
+--> https://example.com:0/   : NULL
 --> http:///blah.com   : bool(false)
 --> http://:80   : bool(false)
 --> http://user@:80   : bool(false)

ext/standard/tests/url/parse_url_basic_006.phpt

@@ -112,6 +112,7 @@ echo "Done";
 --> /   : NULL
 --> /rest/Users?filter={"id":"123"}   : NULL
 --> %:x   : NULL
+--> https://example.com:0/   : NULL
 --> http:///blah.com   : bool(false)
 --> http://:80   : bool(false)
 --> http://user@:80   : bool(false)

ext/standard/tests/url/parse_url_basic_007.phpt

@@ -112,6 +112,7 @@ echo "Done";
 --> /   : string(1) "/"
 --> /rest/Users?filter={"id":"123"}   : string(11) "/rest/Users"
 --> %:x   : string(3) "%:x"
+--> https://example.com:0/   : string(1) "/"
 --> http:///blah.com   : bool(false)
 --> http://:80   : bool(false)
 --> http://user@:80   : bool(false)

ext/standard/tests/url/parse_url_basic_008.phpt

@@ -112,6 +112,7 @@ echo "Done";
 --> /   : NULL
 --> /rest/Users?filter={"id":"123"}   : string(19) "filter={"id":"123"}"
 --> %:x   : NULL
+--> https://example.com:0/   : NULL
 --> http:///blah.com   : bool(false)
 --> http://:80   : bool(false)
 --> http://user@:80   : bool(false)

ext/standard/tests/url/parse_url_basic_009.phpt

@@ -112,6 +112,7 @@ echo "Done";
 --> /   : NULL
 --> /rest/Users?filter={"id":"123"}   : NULL
 --> %:x   : NULL
+--> https://example.com:0/   : NULL
 --> http:///blah.com   : bool(false)
 --> http://:80   : bool(false)
 --> http://user@:80   : bool(false)