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<?php $input = '1.2.3'; var_dump($input); $version = $version[0] = $version = $input; var_dump($version);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/LoJjA
function name:  (null)
number of ops:  12
compiled vars:  !0 = $input, !1 = $version
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '1.2.3'
    4     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                                 
    5     4        ASSIGN                                           ~5      !1, !0
          5        ASSIGN_DIM                                       ~4      !1, 0
          6        OP_DATA                                                  ~5
          7        ASSIGN                                                   !1, ~4
    6     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !1
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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