uri: Allow empty URIs for RFC3986

Author: TimWolla

ext/uri/php_uriparser.c

@@ -296,15 +296,6 @@ void *uriparser_parse_uri_ex(const zend_string *uri_str, const uriparser_uris_t
 {
 	UriUriA uri = {0};
 
-	/* Empty URIs are always invalid. */
-	if (ZSTR_LEN(uri_str) == 0) {
-		if (!silent) {
-			zend_throw_exception(uri_invalid_uri_exception_ce, "The specified URI must not be empty", 0);
-		}
-
-		goto fail;
-	}
-	
 	/* Parse the URI. */
 	if (uriParseSingleUriExMmA(&uri, ZSTR_VAL(uri_str), ZSTR_VAL(uri_str) + ZSTR_LEN(uri_str), NULL, mm) != URI_SUCCESS) {
 		if (!silent) {

ext/uri/tests/004.phpt

@@ -29,8 +29,24 @@ var_dump(Uri\WhatWg\Url::parse("http://RuPaul's Drag Race All Stars 7 Winners Ca
 
 ?>
 --EXPECTF--
-The specified URI must not be empty
-NULL
+object(Uri\Rfc3986\Uri)#1 (8) {
+  ["scheme"]=>
+  NULL
+  ["username"]=>
+  NULL
+  ["password"]=>
+  NULL
+  ["host"]=>
+  NULL
+  ["port"]=>
+  NULL
+  ["path"]=>
+  string(0) ""
+  ["query"]=>
+  NULL
+  ["fragment"]=>
+  NULL
+}
 The specified URI is malformed (MissingSchemeNonRelativeUrl)
 NULL
 object(Uri\Rfc3986\Uri)#%d (%d) {