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<?php namespace ABC { $str = "strlen"::class; echo $str('foo'); echo PHP_EOL; $str = \strlen::class; echo $str('foo'); }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/EKnEd
function name:  (null)
number of ops:  13
compiled vars:  !0 = $str
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    4     0  E >   ASSIGN                                                       !0, 'strlen'
    5     1        INIT_DYNAMIC_CALL                                            !0
          2        SEND_VAL_EX                                                  'foo'
          3        DO_FCALL                                          0  $2      
          4        ECHO                                                         $2
    6     5        FETCH_CONSTANT                                       ~3      'ABC%5CPHP_EOL'
          6        ECHO                                                         ~3
    7     7        ASSIGN                                                       !0, 'strlen'
    8     8        INIT_DYNAMIC_CALL                                            !0
          9        SEND_VAL_EX                                                  'foo'
         10        DO_FCALL                                          0  $5      
         11        ECHO                                                         $5
    9    12      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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