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<?php function a($depth = 0) { //return last backtrace call. If backtrace bigger then 3, return third call. if($depth === 1000) { debug_backtrace(false); } return a(++$depth, str_repeat("a", 1000)); } var_dump(a());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/IihHq
function name:  (null)
number of ops:  6
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   13     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'a'
          2        DO_FCALL                                      0  $0      
          3        SEND_VAR                                                 $0
          4        DO_ICALL                                                 
          5      > RETURN                                                   1

Function a:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 6
Branch analysis from position: 3
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 6
filename:       /in/IihHq
function name:  a
number of ops:  17
compiled vars:  !0 = $depth
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV_INIT                                        !0      0
    6     1        IS_IDENTICAL                                             !0, 1000
          2      > JMPZ                                                     ~1, ->6
    7     3    >   INIT_FCALL                                               'debug_backtrace'
          4        SEND_VAL                                                 <false>
          5        DO_ICALL                                                 
   10     6    >   INIT_FCALL_BY_NAME                                       'a'
          7        PRE_INC                                          ~3      !0
          8        SEND_VAL_EX                                              ~3
          9        INIT_FCALL                                               'str_repeat'
         10        SEND_VAL                                                 'a'
         11        SEND_VAL                                                 1000
         12        DO_ICALL                                         $4      
         13        SEND_VAR_NO_REF_EX                                       $4
         14        DO_FCALL                                      0  $5      
         15      > RETURN                                                   $5
   11    16*     > RETURN                                                   null

End of function a

Generated using Vulcan Logic Dumper, using php 8.0.0


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