Opcode Descriptions and Examples
PHP 手册

ASSIGN_MUL

PHP code

<?php
/*
 * Multiply result by value1 and store in variable indicated by result
 * opcode number: 25
 */
$a*=3;
?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$a

line#op fetchextreturn operands
60 ASSIGN_MUL     !0,3
71 RETURN     1

Opcode Descriptions and Examples
PHP 手册