PHP Manual: FETCH

FETCH_RW


<?php
/*
 * Fetch the value of the varible of "name" to assign it to a variable?
 * opcode number: 86
 */
$x = 1;
$a = 'x';
$$a++;
?>

Function name: (null)

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

line	#	op	fetch	return	operands
6	0	ASSIGN			!0,1
7	1	ASSIGN			!1,'x'
8	2	FETCH_RW	local	$2	!1
	3	POST_INC		~3	$2
	4	FREE			~3
9	5	RETURN			1