Review comments

Author: Girgias

Zend/zend_execute.c

@@ -1384,7 +1384,7 @@ static zend_never_inline zend_long zend_check_string_offset(zval *dim, int type
 					return offset;
 				}
 				zend_illegal_string_offset(dim);
-				break;
+				return 0;
 			}
 			case IS_UNDEF:
 				ZVAL_UNDEFINED_OP2();
@@ -2384,7 +2384,8 @@ static zend_always_inline void zend_fetch_dimension_address_read(zval *result, z
 						return;
 					}
 					zend_illegal_string_offset(dim);
-					break;
+					ZVAL_NULL(result);
+					return;
 				}
 				case IS_UNDEF:
 					ZVAL_UNDEFINED_OP2();
@@ -2401,6 +2402,7 @@ static zend_always_inline void zend_fetch_dimension_address_read(zval *result, z
 					goto try_string_offset;
 				default:
 					zend_illegal_string_offset(dim);
+					ZVAL_NULL(result);
 					return;
 			}