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<?php function foo($a) { bar($a++); } function bar($a) { echo '$a = '.$a."\n"; debug_print_backtrace(); } foo(1);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/br8Co
function name:  (null)
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   INIT_FCALL                                               'foo'
          1        SEND_VAL                                                 1
          2        DO_FCALL                                      0          
          3      > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/br8Co
function name:  foo
number of ops:  6
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
          1        INIT_FCALL_BY_NAME                                       'bar'
          2        POST_INC                                         ~1      !0
          3        SEND_VAL_EX                                              ~1
          4        DO_FCALL                                      0          
          5      > RETURN                                                   null

End of function foo

Function bar:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/br8Co
function name:  bar
number of ops:  7
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        CONCAT                                           ~1      '%24a+%3D+', !0
          2        CONCAT                                           ~2      ~1, '%0A'
          3        ECHO                                                     ~2
          4        INIT_FCALL                                               'debug_print_backtrace'
          5        DO_ICALL                                                 
          6      > RETURN                                                   null

End of function bar

Generated using Vulcan Logic Dumper, using php 8.0.0


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