--- zend_constants.c_old	Sat Jun 15 17:46:53 2002
+++ zend_constants.c	Sat Jun 15 18:09:59 2002
@@ -222,12 +222,12 @@
 	zend_constant *c;
 	char *lookup_name;
 	int retval;
-
-	lookup_name = do_alloca(name_len+1);
-	memcpy(lookup_name, name, name_len+1);
-
-	zend_str_tolower(lookup_name, name_len);
-
+	int c_flag;
+	
+	c_flag=1;
+	lookup_name = name;
+	
+	casechk:
 	if (zend_hash_find(EG(zend_constants), lookup_name, name_len+1, (void **) &c)==SUCCESS) {
 		if ((c->flags & CONST_CS) && memcmp(c->name, name, name_len)!=0) {
 			retval=0;
@@ -236,11 +236,19 @@
 			*result = c->value;
 			zval_copy_ctor(result);
 		}
-	} else {
+	}
+	else if ( c_flag ) { 
+		lookup_name = do_alloca(name_len+1);
+		memcpy(lookup_name, name, name_len+1);
+		zend_str_tolower(lookup_name, name_len);
+		c_flag=0;
+		goto casechk;
+	}
+	else {
 		retval=0;
 	}
 
-	free_alloca(lookup_name);
+	if( !c_flag ) free_alloca(lookup_name);
 
 	return retval;
 }
@@ -248,14 +256,20 @@
 
 ZEND_API int zend_register_constant(zend_constant *c TSRMLS_DC)
 {
-	char *lowercase_name = zend_strndup(c->name, c->name_len);
 	int ret = SUCCESS;
+	char *lowercase_name;
+	
+	if( !(c->flags & CONST_CS) ) {
+		lowercase_name = zend_strndup(c->name, c->name_len);
+		zend_str_tolower(lowercase_name, c->name_len);
+	}	
+	else
+		lowercase_name = zend_strndup(c->name, c->name_len);
 
 #if 0
 	printf("Registering constant for module %d\n", c->module_number);
 #endif
 
-	zend_str_tolower(lowercase_name, c->name_len);
 	if (zend_hash_add(EG(zend_constants), lowercase_name, c->name_len, (void *) c, sizeof(zend_constant), NULL)==FAILURE) {
 		free(c->name);
 		if (!(c->flags & CONST_PERSISTENT)