ZEND_ASSIGN_REF  2608 Zend/zend_compile.c 	opline = zend_emit_op(result, ZEND_ASSIGN_REF, &target_node, &source_node);
ZEND_ASSIGN_REF  2284 Zend/zend_vm_def.h ZEND_VM_HANDLER(39, ZEND_ASSIGN_REF, VAR|CV, VAR|CV)
ZEND_ASSIGN_REF  1880 ext/opcache/Optimizer/block_pass.c 					case ZEND_ASSIGN_REF:
ZEND_ASSIGN_REF   212 ext/opcache/Optimizer/zend_optimizer.c 		case ZEND_ASSIGN_REF: