3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = [1 => true]; next($data); var_dump(key($data)); $data[0] = true; var_dump(key($data));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/DoFve
function name:  (null)
number of ops:  19
compiled vars:  !0 = $data
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        INIT_FCALL                                               'next'
          2        SEND_REF                                                 !0
          3        DO_ICALL                                                 
    4     4        INIT_FCALL                                               'var_dump'
          5        INIT_FCALL                                               'key'
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                         $3      
          8        SEND_VAR                                                 $3
          9        DO_ICALL                                                 
    5    10        ASSIGN_DIM                                               !0, 0
         11        OP_DATA                                                  <true>
    6    12        INIT_FCALL                                               'var_dump'
         13        INIT_FCALL                                               'key'
         14        SEND_VAR                                                 !0
         15        DO_ICALL                                         $6      
         16        SEND_VAR                                                 $6
         17        DO_ICALL                                                 
         18      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
184.38 ms | 1394 KiB | 19 Q