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<?php $empty_string = ''; $ref = &$empty_string['x']; $ref = 'hello'; var_export($empty_string); print "\n"; $non_empty_string = 'abc'; $ref = &$non_empty_string['x']; $ref = 'hello'; var_export($non_empty_string);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/dDDi0
function name:  (null)
number of ops:  16
compiled vars:  !0 = $empty_string, !1 = $ref, !2 = $non_empty_string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, ''
    4     1        FETCH_DIM_W                                      $4      !0, 'x'
          2        ASSIGN_REF                                               !1, $4
    6     3        ASSIGN                                                   !1, 'hello'
    8     4        INIT_FCALL                                               'var_export'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                                 
   10     7        ECHO                                                     '%0A'
   12     8        ASSIGN                                                   !2, 'abc'
   13     9        FETCH_DIM_W                                      $9      !2, 'x'
         10        ASSIGN_REF                                               !1, $9
   15    11        ASSIGN                                                   !1, 'hello'
   17    12        INIT_FCALL                                               'var_export'
         13        SEND_VAR                                                 !2
         14        DO_ICALL                                                 
         15      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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