FETCH_DIM_IS
FETCH_DIM_RW
Opcode Descriptions and Examples
PHP Manual

## FETCH_DIM_R

## PHP code

`<?php
/*
* Fetch the value of the element at "index" in "array-value" to store it in "result". Read-only?
* opcode number: 81
*/
$x = array(1,2,3);
$a = 'x';
echo $$a[0];
?>`

## PHP opcodes

Function name: (null)

Compiled variables: !0=$x, !1=$a

line | # | op | fetch | ext | return | operands
--- | --- | --- | --- | --- | --- | ---
6 | 0 | INIT_ARRAY |  |  | ~0 | 1
| 1 | ADD_ARRAY_ELEMENT |  |  | ~0 | 2
| 2 | ADD_ARRAY_ELEMENT |  |  | ~0 | 3
| 3 | ASSIGN |  |  |  | !0,~0
7 | 4 | ASSIGN |  |  |  | !1,'x'
8 | 5 | FETCH_DIM_R |  |  | $3 | !1,0
| 6 | FETCH_R | local |  | $4 | $3
| 7 | ECHO |  |  |  | $4
9 | 8 | RETURN |  |  |  | 1