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(<?php function hu ($a, $c, $b=null) { if(!isset($b)) echo "$b is NULL"; } hu ( "1","2" );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/CLLPb
function name:  (null)
number of ops:  6
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    1     0  E >   ECHO                                                     '%28'
   12     1        INIT_FCALL                                               'hu'
          2        SEND_VAL                                                 '1'
          3        SEND_VAL                                                 '2'
          4        DO_FCALL                                      0          
          5      > RETURN                                                   1

Function hu:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 9
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
filename:       /in/CLLPb
function name:  hu
number of ops:  10
compiled vars:  !0 = $a, !1 = $c, !2 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        RECV_INIT                                        !2      null
    7     3        ISSET_ISEMPTY_CV                                 ~3      !2
          4        BOOL_NOT                                         ~4      ~3
          5      > JMPZ                                                     ~4, ->9
    8     6    >   NOP                                                      
          7        FAST_CONCAT                                      ~5      !2, '+is+NULL'
          8        ECHO                                                     ~5
   10     9    > > RETURN                                                   null

End of function hu

Generated using Vulcan Logic Dumper, using php 8.0.0


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