BOOL
BOOL_XOR
Opcode Descriptions and Examples
PHP Manual

## BOOL_NOT

## PHP code

`<?php
/*
* Boolean (logical) not of "value"
* opcode number: 13
*/
echo !1;
?>`

## PHP opcodes

Function name: (null)

Compiled variables: none

line | # | op | fetch | ext | return | operands
--- | --- | --- | --- | --- | --- | ---
6 | 0 | BOOL_NOT |  |  | ~0 | 1
| 1 | ECHO |  |  |  | ~0
7 | 2 | RETURN |  |  |  | 1

BOOL
BOOL_XOR
Opcode Descriptions and Examples
PHP Manual