ADD_INTERFACE
ADD_VAR
Opcode Descriptions and Examples
PHP Manual

## ADD_STRING

## PHP code

`<?php
/*
* add string value2 to string value2 and store in result
* opcode number: 55
*/
echo "hello$a world";
?>`

## PHP opcodes

Function name: (null)

Compiled variables: !0=$a

line | # | op | fetch | ext | return | operands
--- | --- | --- | --- | --- | --- | ---
6 | 0 | ADD_STRING |  |  | ~0 | 'hello'
| 1 | ADD_VAR |  |  | ~0 | ~0,!0
| 2 | ADD_STRING |  |  | ~0 | ~0,'+world'
| 3 | ECHO |  |  |  | ~0
7 | 4 | RETURN |  |  |  | 1

ADD_INTERFACE
ADD_VAR
Opcode Descriptions and Examples
PHP Manual