Php/docs/internals2.opcodes.pre-inc

From Get docs

PRE_INC

PHP code

<?php/* * increments variable indicated by value1 by 1 (before performing other operations) and stores in result * opcode number: 34 */++$a;?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$a

line # op fetch ext return operands
6 0 PRE_INC       !0
7 1 RETURN       1