3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [a, s, d, '', a, s, d, '', a, s, d, '',]; print_r(array_filter($arr));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/CGvf0
function name:  (null)
number of ops:  29
compiled vars:  !0 = $arr
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   FETCH_CONSTANT                                   ~1      'a'
          1        INIT_ARRAY                                       ~2      ~1
          2        FETCH_CONSTANT                                   ~3      's'
          3        ADD_ARRAY_ELEMENT                                ~2      ~3
          4        FETCH_CONSTANT                                   ~4      'd'
          5        ADD_ARRAY_ELEMENT                                ~2      ~4
          6        ADD_ARRAY_ELEMENT                                ~2      ''
          7        FETCH_CONSTANT                                   ~5      'a'
          8        ADD_ARRAY_ELEMENT                                ~2      ~5
          9        FETCH_CONSTANT                                   ~6      's'
         10        ADD_ARRAY_ELEMENT                                ~2      ~6
         11        FETCH_CONSTANT                                   ~7      'd'
         12        ADD_ARRAY_ELEMENT                                ~2      ~7
         13        ADD_ARRAY_ELEMENT                                ~2      ''
         14        FETCH_CONSTANT                                   ~8      'a'
         15        ADD_ARRAY_ELEMENT                                ~2      ~8
         16        FETCH_CONSTANT                                   ~9      's'
         17        ADD_ARRAY_ELEMENT                                ~2      ~9
         18        FETCH_CONSTANT                                   ~10     'd'
         19        ADD_ARRAY_ELEMENT                                ~2      ~10
         20        ADD_ARRAY_ELEMENT                                ~2      ''
         21        ASSIGN                                                   !0, ~2
    4    22        INIT_FCALL                                               'print_r'
         23        INIT_FCALL                                               'array_filter'
         24        SEND_VAR                                                 !0
         25        DO_ICALL                                         $12     
         26        SEND_VAR                                                 $12
         27        DO_ICALL                                                 
         28      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
173.12 ms | 1400 KiB | 17 Q