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<?php $mappings = [ '21021200' => '21028800', ]; var_dump(isset($mappings[21021200])); var_dump(isset($mappings['21021200']));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/moOcn
function name:  (null)
number of ops:  10
compiled vars:  !0 = $mappings
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    7     1        INIT_FCALL                                                   'var_dump'
          2        ISSET_ISEMPTY_DIM_OBJ                             0  ~2      !0, 21021200
          3        SEND_VAL                                                     ~2
          4        DO_ICALL                                                     
    8     5        INIT_FCALL                                                   'var_dump'
          6        ISSET_ISEMPTY_DIM_OBJ                             0  ~4      !0, 21021200
          7        SEND_VAL                                                     ~4
          8        DO_ICALL                                                     
          9      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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