Make url_stats in resolve_path quiet

These stats are used to check whether the file exists -- they
should not generate errors. Having the flag set is particularly
important for custom stream wrappers.

Author: nikic

Zend/tests/include_stat_is_quiet.phpt

@@ -0,0 +1,30 @@
+--TEST--
+Stats executed during include path resolution should be silent
+--FILE--
+<?php
+
+class StreamWrapper {
+    public function url_stat($path, $flags) {
+        $path = str_replace('test://', 'file://', $path);
+        if ($flags & STREAM_URL_STAT_QUIET) {
+            return @stat($path);
+        } else {
+            return stat($path);
+        }
+    }
+}
+
+stream_wrapper_register('test', StreamWrapper::class);
+set_include_path('test://foo:test://bar');
+
+try {
+    require_once 'doesnt_exist.php';
+} catch (Exception $e) {
+    echo $e->getMessage(), "\n";
+}
+
+?>
+--EXPECTF--
+Warning: require_once(doesnt_exist.php): failed to open stream: No such file or directory in %s on line %d
+
+Fatal error: require_once(): Failed opening required 'doesnt_exist.php' (include_path='test://foo:test://bar') in %s on line %d

main/fopen_wrappers.c

@@ -558,7 +558,7 @@ PHPAPI zend_string *php_resolve_path(const char *filename, size_t filename_lengt
 				if (wrapper->wops->url_stat) {
 					php_stream_statbuf ssb;
 
-					if (SUCCESS == wrapper->wops->url_stat(wrapper, trypath, 0, &ssb, NULL)) {
+					if (SUCCESS == wrapper->wops->url_stat(wrapper, trypath, PHP_STREAM_URL_STAT_QUIET, &ssb, NULL)) {
 						return zend_string_init(trypath, strlen(trypath), 0);
 					}
 					if (EG(exception)) {
@@ -598,7 +598,7 @@ PHPAPI zend_string *php_resolve_path(const char *filename, size_t filename_lengt
 					if (wrapper->wops->url_stat) {
 						php_stream_statbuf ssb;
 
-						if (SUCCESS == wrapper->wops->url_stat(wrapper, trypath, 0, &ssb, NULL)) {
+						if (SUCCESS == wrapper->wops->url_stat(wrapper, trypath, PHP_STREAM_URL_STAT_QUIET, &ssb, NULL)) {
 							return zend_string_init(trypath, strlen(trypath), 0);
 						}
 						if (EG(exception)) {