isset_variables   244 Zend/zend_language_parser.y %type <ast> assignment_list_element array_pair encaps_var encaps_var_offset isset_variables
isset_variables  1246 Zend/zend_language_parser.y 		T_ISSET '(' isset_variables ')' { $$ = $3; }
isset_variables  1260 Zend/zend_language_parser.y isset_variables:
isset_variables  1262 Zend/zend_language_parser.y 	|	isset_variables ',' isset_variable