ZEND_ASSIGN_SUB  3873 Zend/zend_language_parser.c     { zend_check_writable_variable(&(yyvsp[(1) - (3)])); zend_do_end_variable_parse(BP_VAR_RW, 0 TSRMLS_CC); zend_do_binary_assign_op(ZEND_ASSIGN_SUB, &(yyval), &(yyvsp[(1) - (3)]), &(yyvsp[(3) - (3)]) TSRMLS_CC); }
ZEND_ASSIGN_SUB   560 Zend/zend_language_parser.y 	|	variable T_MINUS_EQUAL expr	{ zend_check_writable_variable(&$1); zend_do_end_variable_parse(BP_VAR_RW, 0 TSRMLS_CC); zend_do_binary_assign_op(ZEND_ASSIGN_SUB, &$$, &$1, &$3 TSRMLS_CC); }
ZEND_ASSIGN_SUB   440 Zend/zend_opcode.c 		case ZEND_ASSIGN_SUB:
ZEND_ASSIGN_SUB   488 Zend/zend_vm_def.h ZEND_VM_HANDLER(24, ZEND_ASSIGN_SUB, VAR|UNUSED|CV, CONST|TMP|VAR|UNUSED|CV)