3v4l.org

run code in 300+ PHP versions simultaneously
<?php $n = []; $t['bcc'] = true; $f['bcc'] = false; var_dump( isset($n['bcc']), isset($t['bcc']), isset($f['bcc']), empty($n['bcc']), empty($t['bcc']), empty($f['bcc']) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/mWCIW
function name:  (null)
number of ops:  20
compiled vars:  !0 = $n, !1 = $t, !2 = $f
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN_DIM                                               !1, 'bcc'
          2        OP_DATA                                                  <true>
    5     3        ASSIGN_DIM                                               !2, 'bcc'
          4        OP_DATA                                                  <false>
    7     5        INIT_FCALL                                               'var_dump'
    8     6        ISSET_ISEMPTY_DIM_OBJ                         0  ~6      !0, 'bcc'
          7        SEND_VAL                                                 ~6
    9     8        ISSET_ISEMPTY_DIM_OBJ                         0  ~7      !1, 'bcc'
          9        SEND_VAL                                                 ~7
   10    10        ISSET_ISEMPTY_DIM_OBJ                         0  ~8      !2, 'bcc'
         11        SEND_VAL                                                 ~8
   11    12        ISSET_ISEMPTY_DIM_OBJ                         1  ~9      !0, 'bcc'
         13        SEND_VAL                                                 ~9
   12    14        ISSET_ISEMPTY_DIM_OBJ                         1  ~10     !1, 'bcc'
         15        SEND_VAL                                                 ~10
   13    16        ISSET_ISEMPTY_DIM_OBJ                         1  ~11     !2, 'bcc'
         17        SEND_VAL                                                 ~11
         18        DO_ICALL                                                 
   14    19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
170.84 ms | 1395 KiB | 15 Q