Opcode Descriptions and Examples
PHP 手册

ASSIGN_BW_OR

PHP code

<?php
/*
 * Performs binary OR on result and value1 and stores in variable indicated by result.
 * opcode number: 31
 */
$a |= 64;
?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$a

line#op fetchextreturn operands
60 ASSIGN_BW_OR     !0,64
71 RETURN     1

Opcode Descriptions and Examples
PHP 手册