3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'a'; $a = $string++; $b = $string += 1; var_dump($a); var_dump($b);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Mel2c
function name:  (null)
number of ops:  12
compiled vars:  !0 = $string, !1 = $a, !2 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'a'
    4     1        POST_INC                                         ~4      !0
          2        ASSIGN                                                   !1, ~4
    5     3        ASSIGN_OP                                     1  ~6      !0, 1
          4        ASSIGN                                                   !2, ~6
    7     5        INIT_FCALL                                               'var_dump'
          6        SEND_VAR                                                 !1
          7        DO_ICALL                                                 
    8     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !2
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
157.02 ms | 1394 KiB | 15 Q