3v4l.org

run code in 500+ PHP versions simultaneously
<?php $array = [ 'str' => 'foo', 'empty' => '', 'zero' => 0, 'one' => 1, 'null' => null, 'false' => false, 'true' => true, ]; var_export(array_keys($array, null));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Sld4S
function name:  (null)
number of ops:  9
compiled vars:  !0 = $array
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
   13     1        INIT_FCALL                                                   'var_export'
          2        INIT_FCALL                                                   'array_keys'
          3        SEND_VAR                                                     !0
          4        SEND_VAL                                                     null
          5        DO_ICALL                                             $2      
          6        SEND_VAR                                                     $2
          7        DO_ICALL                                                     
          8      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
157.43 ms | 1717 KiB | 15 Q