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<?php function foo($x) { $x++; var_dump(func_get_arg(0)); } foo(1);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/goXfa
function name:  (null)
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     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/goXfa
function name:  foo
number of ops:  9
compiled vars:  !0 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    4     1        PRE_INC                                                  !0
    5     2        INIT_FCALL                                               'var_dump'
          3        INIT_FCALL                                               'func_get_arg'
          4        SEND_VAL                                                 0
          5        DO_ICALL                                         $2      
          6        SEND_VAR                                                 $2
          7        DO_ICALL                                                 
    6     8      > RETURN                                                   null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


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