Expand file path in file stat only for wrapper path (php#12068)

Author: bukka

ext/standard/filestat.c

@@ -727,28 +727,31 @@ PHPAPI void php_stat(zend_string *filename, int type, zval *return_value)
 
 		if (wrapper == &php_plain_files_wrapper) {
 			char realpath[MAXPATHLEN];
-			if (expand_filepath(local, realpath) == NULL) {
-				strlcpy(realpath, local, sizeof(realpath));
+			const char *file_path_to_check;
+			if (strstr(local, "://") == NULL || expand_filepath(local, realpath) == NULL) {
+				file_path_to_check = local;
+			} else {
+				file_path_to_check = realpath;
 			}
 			switch (type) {
 #ifdef F_OK
 				case FS_EXISTS:
-					RETURN_BOOL(VCWD_ACCESS(realpath, F_OK) == 0);
+					RETURN_BOOL(VCWD_ACCESS(file_path_to_check, F_OK) == 0);
 					break;
 #endif
 #ifdef W_OK
 				case FS_IS_W:
-					RETURN_BOOL(VCWD_ACCESS(realpath, W_OK) == 0);
+					RETURN_BOOL(VCWD_ACCESS(file_path_to_check, W_OK) == 0);
 					break;
 #endif
 #ifdef R_OK
 				case FS_IS_R:
-					RETURN_BOOL(VCWD_ACCESS(realpath, R_OK) == 0);
+					RETURN_BOOL(VCWD_ACCESS(file_path_to_check, R_OK) == 0);
 					break;
 #endif
 #ifdef X_OK
 				case FS_IS_X:
-					RETURN_BOOL(VCWD_ACCESS(realpath, X_OK) == 0);
+					RETURN_BOOL(VCWD_ACCESS(file_path_to_check, X_OK) == 0);
 					break;
 #endif
 			}