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<?php var_dump('0d9' + 1); $foo = '0d9'; $foo++; var_dump($foo); $foo = '0d9'; $foo += 1; var_dump($foo);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/HLuj3
function name:  (null)
number of ops:  15
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
          1        ADD                                              ~1      '0d9', 1
          2        SEND_VAL                                                 ~1
          3        DO_ICALL                                                 
    3     4        ASSIGN                                                   !0, '0d9'
          5        PRE_INC                                                  !0
          6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
    4     9        ASSIGN                                                   !0, '0d9'
         10        ASSIGN_OP                                     1          !0, 1
         11        INIT_FCALL                                               'var_dump'
         12        SEND_VAR                                                 !0
         13        DO_ICALL                                                 
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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