From: Xinchen Hui <laruence@php.net>
Date: Mon, 19 Jan 2015 14:10:01 +0000 (-0500)
Subject: Optimized is_a
X-Git-Tag: PRE_PHP7_REMOVALS~25^2~88
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=442efdaaea3c1a06b01aa5f52c2ec05c3d64a0d1;p=php

Optimized is_a
---

diff --git a/Zend/zend_builtin_functions.c b/Zend/zend_builtin_functions.c
index f13a2da91d..161bfb2812 100644
--- a/Zend/zend_builtin_functions.c
+++ b/Zend/zend_builtin_functions.c
@@ -1014,14 +1014,18 @@ static void is_a_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool only_subclass) /*
 		RETURN_FALSE;
 	}
 
-	ce = zend_lookup_class_ex(class_name, NULL, 0);
-	if (!ce) {
-		retval = 0;
+	if (!only_subclass && EXPECTED(zend_string_equals(instance_ce->name, class_name))) {
+		retval = 1;
 	} else {
-		if (only_subclass && instance_ce == ce) {
+		ce = zend_lookup_class_ex(class_name, NULL, 0);
+		if (!ce) {
 			retval = 0;
- 		} else {
-			retval = instanceof_function(instance_ce, ce);
+		} else {
+			if (only_subclass && instance_ce == ce) {
+				retval = 0;
+			} else {
+				retval = instanceof_function(instance_ce, ce);
+			}
 		}
 	}