unset_variables   247 Zend/zend_language_parser.y %type <ast> echo_expr_list unset_variables catch_list parameter_list class_statement_list
unset_variables   436 Zend/zend_language_parser.y 	|	T_UNSET '(' unset_variables ')' ';' { $$ = $3; }
unset_variables   466 Zend/zend_language_parser.y unset_variables:
unset_variables   468 Zend/zend_language_parser.y 	|	unset_variables ',' unset_variable { $$ = zend_ast_list_add($1, $3); }