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<?php namespace foo; class MyException extends Exception {} $class = '\\foo\\MyException'; echo "$class\n"; var_export(is_subclass_of($class, '\\Exception'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/75tkD
function name:  (null)
number of ops:  13
compiled vars:  !0 = $class
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   DECLARE_CLASS                                            'foo%5Cmyexception', 'foo%5Cexception'
    7     1        ASSIGN                                                   !0, '%5Cfoo%5CMyException'
    8     2        NOP                                                      
          3        FAST_CONCAT                                      ~2      !0, '%0A'
          4        ECHO                                                     ~2
   10     5        INIT_NS_FCALL_BY_NAME                                    'foo%5Cvar_export'
          6        INIT_NS_FCALL_BY_NAME                                    'foo%5Cis_subclass_of'
          7        SEND_VAR_EX                                              !0
          8        SEND_VAL_EX                                              '%5CException'
          9        DO_FCALL                                      0  $3      
         10        SEND_VAR_NO_REF_EX                                       $3
         11        DO_FCALL                                      0          
         12      > RETURN                                                   1

Class foo\MyException: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.0.0


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