3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo['asd'] = ''; var_dump((bool) $foo['asd']);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/cXFn1
function name:  (null)
number of ops:  8
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN_DIM                                               !0, 'asd'
          1        OP_DATA                                                  ''
    4     2        INIT_FCALL                                               'var_dump'
          3        FETCH_DIM_R                                      ~2      !0, 'asd'
          4        BOOL                                             ~3      ~2
          5        SEND_VAL                                                 ~3
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
163.88 ms | 1394 KiB | 15 Q