NOP

PHP code

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

PHP opcodes

Function name: (null)

Compiled variables: none

line#opfetchextreturnoperands
60NOP    
71RETURN   1

Function name: A

Compiled variables: none

line#opfetchextreturnoperands
60RETURN   null