empty_var         155 ext/session/session.c 		zval *empty_var;
empty_var         157 ext/session/session.c 		ALLOC_INIT_ZVAL(empty_var);
empty_var         158 ext/session/session.c 		ZEND_SET_SYMBOL_WITH_LENGTH(Z_ARRVAL_P(PS(http_session_vars)), name, namelen+1, empty_var, 1, 0);