From: Andi Gutmans <andi@php.net>
Date: Thu, 10 Aug 2000 22:08:02 +0000 (+0000)
Subject: @ Fix problem with nested foreach()'s (Andi, Zend Engine)
X-Git-Tag: php-4.0.2RC1~149
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e5015ed581823672e65c8251d1b46c0a155d6b4b;p=php

@ Fix problem with nested foreach()'s (Andi, Zend Engine)
---

diff --git a/Zend/zend-parser.y b/Zend/zend-parser.y
index 482e72267b..bf7d7261ca 100644
--- a/Zend/zend-parser.y
+++ b/Zend/zend-parser.y
@@ -197,7 +197,8 @@ unticked_statement:
 	|	expr ';'				{ do_free(&$1 CLS_CC); }
 	|	T_USE use_filename ';'		{ zend_error(E_COMPILE_ERROR,"use: Not yet supported. Please use include_once() or require_once()");  zval_dtor(&$2.u.constant); }
 	|	T_UNSET '(' unset_variables ')' ';'
-	|	T_FOREACH '(' expr T_AS { do_foreach_begin(&$1, &$3, &$2, &$4 CLS_CC); } w_cvar foreach_optional_arg ')' { do_foreach_cont(&$6, &$7, &$4 CLS_CC); } foreach_statement { do_foreach_end(&$1, &$2 CLS_CC); }
+	|	T_FOREACH '(' w_cvar T_AS { do_foreach_begin(&$1, &$3, &$2, &$4, 1 CLS_CC); } w_cvar foreach_optional_arg ')' { do_foreach_cont(&$6, &$7, &$4 CLS_CC); } foreach_statement { do_foreach_end(&$1, &$2 CLS_CC); }
+	|	T_FOREACH '(' expr_without_variable T_AS { do_foreach_begin(&$1, &$3, &$2, &$4, 0 CLS_CC); } w_cvar foreach_optional_arg ')' { do_foreach_cont(&$6, &$7, &$4 CLS_CC); } foreach_statement { do_foreach_end(&$1, &$2 CLS_CC); }
 	|	T_DECLARE { do_declare_begin(CLS_C); } '(' declare_list ')' declare_statement { do_declare_end(CLS_C); }
 	|	';'		/* empty statement */
 ;
diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
index 0629190e22..e76e542ba8 100644
--- a/Zend/zend_compile.c
+++ b/Zend/zend_compile.c
@@ -2012,7 +2012,7 @@ void do_isset_or_isempty(int type, znode *result, znode *variable CLS_DC)
 }
 
 
-void do_foreach_begin(znode *foreach_token, znode *array, znode *open_brackets_token, znode *as_token CLS_DC)
+void do_foreach_begin(znode *foreach_token, znode *array, znode *open_brackets_token, znode *as_token, int variable CLS_DC)
 {
 	zend_op *opline = get_next_op(CG(active_op_array) CLS_CC);
 
@@ -2022,6 +2022,11 @@ void do_foreach_begin(znode *foreach_token, znode *array, znode *open_brackets_t
 	opline->result.u.var = get_temporary_variable(CG(active_op_array));
 	opline->op1 = *array;
 	SET_UNUSED(opline->op2);
+	if (variable) {
+		opline->extended_value = 1;
+	} else {
+		opline->extended_value = 0;
+	}
 	*open_brackets_token = opline->result;
 
 	zend_stack_push(&CG(foreach_copy_stack), (void *) &opline->result, sizeof(znode));
diff --git a/Zend/zend_compile.h b/Zend/zend_compile.h
index 67a49711fe..bb49951afb 100644
--- a/Zend/zend_compile.h
+++ b/Zend/zend_compile.h
@@ -344,7 +344,7 @@ void do_include_or_eval(int type, znode *result, znode *op1 CLS_DC);
 void do_unset(znode *variable CLS_DC);
 void do_isset_or_isempty(int type, znode *result, znode *variable CLS_DC);
 
-void do_foreach_begin(znode *foreach_token, znode *array, znode *open_brackets_token, znode *as_token CLS_DC);
+void do_foreach_begin(znode *foreach_token, znode *array, znode *open_brackets_token, znode *as_token, int variable CLS_DC);
 void do_foreach_cont(znode *value, znode *key, znode *as_token CLS_DC);
 void do_foreach_end(znode *foreach_token, znode *open_brackets_token CLS_DC);
 
diff --git a/Zend/zend_execute.c b/Zend/zend_execute.c
index fbb77e3765..1017543cf3 100644
--- a/Zend/zend_execute.c
+++ b/Zend/zend_execute.c
@@ -2131,22 +2131,27 @@ send_by_ref:
 				}
 				NEXT_OPCODE();
 			case ZEND_FE_RESET: {
-					zval *array_ptr;
+					zval *array_ptr, **array_ptr_ptr;
 					HashTable *fe_ht;
 					
-					array_ptr = get_zval_ptr(&opline->op1, Ts, &EG(free_op1), BP_VAR_R);
-
-					if (EG(free_op1)) { /* IS_TMP_VAR */
-						zval *tmp;
-
-						ALLOC_ZVAL(tmp);
-						*tmp = *array_ptr;
-						INIT_PZVAL(tmp);
-						array_ptr = tmp;
-					} else {
+					if (opline->extended_value) {
+						array_ptr_ptr = get_zval_ptr_ptr(&opline->op1, Ts, BP_VAR_R);
+						SEPARATE_ZVAL_IF_NOT_REF(array_ptr_ptr);
+						array_ptr = *array_ptr_ptr;
 						array_ptr->refcount++;
+					} else {
+						array_ptr = get_zval_ptr(&opline->op1, Ts, &EG(free_op1), BP_VAR_R);
+						if (EG(free_op1)) { /* IS_TMP_VAR */
+							zval *tmp;
+
+							ALLOC_ZVAL(tmp);
+							*tmp = *array_ptr;
+							INIT_PZVAL(tmp);
+							array_ptr = tmp;
+						} else {
+							array_ptr->refcount++;
+						}
 					}
-
 					PZVAL_LOCK(array_ptr);
 					Ts[opline->result.u.var].var.ptr = array_ptr;
 					Ts[opline->result.u.var].var.ptr_ptr = &Ts[opline->result.u.var].var.ptr;