SEND_VAR

PHP code

<?php
/*
 * Pass the variable value as an actual parameter to a function.  DO_FCALL follows.
 * opcode number: 66
 */
$a = array(1,2,3);
if(is_array($a)){ return 0; }
?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$a

line#opfetchextreturnoperands
60INIT_ARRAY  ~01
 1ADD_ARRAY_ELEMENT  ~02
 2ADD_ARRAY_ELEMENT  ~03
 3ASSIGN   !0,~0
74SEND_VAR   !0
 5DO_FCALL 1 'is_array'
 6JMPZ   $2,->9
 7RETURN   0
 8JMP   ->9
89RETURN   1