ZEND_PARSED_REFERENCE_VARIABLE 6330 Zend/zend_compile.c if (key->EA & ZEND_PARSED_REFERENCE_VARIABLE) { ZEND_PARSED_REFERENCE_VARIABLE 6338 Zend/zend_compile.c if (value->EA & ZEND_PARSED_REFERENCE_VARIABLE) { ZEND_PARSED_REFERENCE_VARIABLE 4081 Zend/zend_language_parser.c { zend_check_writable_variable(&(yyvsp[(2) - (2)])); (yyval) = (yyvsp[(2) - (2)]); (yyval).EA |= ZEND_PARSED_REFERENCE_VARIABLE; } ZEND_PARSED_REFERENCE_VARIABLE 439 Zend/zend_language_parser.y | '&' variable { zend_check_writable_variable(&$2); $$ = $2; $$.EA |= ZEND_PARSED_REFERENCE_VARIABLE; }