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

Generated using Vulcan Logic Dumper, using php 8.0.0


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