Php/docs/internals2.opcodes.nop

From Get docs

NOP

PHP code

<?php/* * no operation * opcode number: 0 */function A(){}; ?>

PHP opcodes

Function name: (null)

Compiled variables: none

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

Function name: A

Compiled variables: none

line # op fetch ext return operands
6 0 RETURN       null