https://bugs.php.net/bug.php?id=50563

do not throw warning as php 5.3.3 does not
--- php/php-src/branches/PHP_5_3/ext/standard/url.c	2010/06/16 18:45:54	300500
+++ php/php-src/branches/PHP_5_3/ext/standard/url.c	2010/06/16 18:56:24	300501
@@ -355,7 +355,7 @@
 
 	resource = php_url_parse_ex(str, str_len);
 	if (resource == NULL) {
-		php_error_docref1(NULL TSRMLS_CC, str, E_WARNING, "Unable to parse URL");
+		/* @todo Find a method to determine why php_url_parse_ex() failed */
 		RETURN_FALSE;
 	}