3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foobar = "baz"; $a = compact('foobar'); var_dump($a); $varname = array_keys($a); echo $varname;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/C130M
function name:  (null)
number of ops:  14
compiled vars:  !0 = $foobar, !1 = $a, !2 = $varname
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'baz'
    4     1        INIT_FCALL                                               'compact'
          2        SEND_VAL                                                 'foobar'
          3        DO_ICALL                                         $4      
          4        ASSIGN                                                   !1, $4
    5     5        INIT_FCALL                                               'var_dump'
          6        SEND_VAR                                                 !1
          7        DO_ICALL                                                 
    6     8        INIT_FCALL                                               'array_keys'
          9        SEND_VAR                                                 !1
         10        DO_ICALL                                         $7      
         11        ASSIGN                                                   !2, $7
    7    12        ECHO                                                     !2
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
172.77 ms | 1394 KiB | 19 Q