3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ''; $b = ''; $c = ''; $d = ''; var_dump($a, $b, $c, $d); echo "---\n"; var_dump($a++, ++$b, $c--, --$d); echo "---\n"; var_dump($a, $b, $c, $d);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/frC2c
function name:  (null)
number of ops:  29
compiled vars:  !0 = $a, !1 = $b, !2 = $c, !3 = $d
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, ''
          1        ASSIGN                                                   !1, ''
          2        ASSIGN                                                   !2, ''
          3        ASSIGN                                                   !3, ''
    4     4        INIT_FCALL                                               'var_dump'
          5        SEND_VAR                                                 !0
          6        SEND_VAR                                                 !1
          7        SEND_VAR                                                 !2
          8        SEND_VAR                                                 !3
          9        DO_ICALL                                                 
    5    10        ECHO                                                     '---%0A'
    6    11        INIT_FCALL                                               'var_dump'
         12        POST_INC                                         ~9      !0
         13        SEND_VAL                                                 ~9
         14        PRE_INC                                          ~10     !1
         15        SEND_VAL                                                 ~10
         16        POST_DEC                                         ~11     !2
         17        SEND_VAL                                                 ~11
         18        PRE_DEC                                          ~12     !3
         19        SEND_VAL                                                 ~12
         20        DO_ICALL                                                 
    7    21        ECHO                                                     '---%0A'
    8    22        INIT_FCALL                                               'var_dump'
         23        SEND_VAR                                                 !0
         24        SEND_VAR                                                 !1
         25        SEND_VAR                                                 !2
         26        SEND_VAR                                                 !3
         27        DO_ICALL                                                 
         28      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
153.77 ms | 1400 KiB | 15 Q