3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new stdClass(); $b = array( $a ); echo isset( $b[0][0] );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TH9Cr
function name:  (null)
number of ops:  9
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $2      'stdClass'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $2
    4     3        INIT_ARRAY                                       ~5      !0
          4        ASSIGN                                                   !1, ~5
    6     5        FETCH_DIM_IS                                     ~7      !1, 0
          6        ISSET_ISEMPTY_DIM_OBJ                         0  ~8      ~7, 0
          7        ECHO                                                     ~8
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
161.65 ms | 1392 KiB | 13 Q