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<?php $ref = new ReflectionFunction('printf'); foreach ($ref->getParameters as $parameter) { var_dump($parameter->isOptional()); }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 6, Position 2 = 13
Branch analysis from position: 6
2 jumps found. (Code = 78) Position 1 = 7, Position 2 = 13
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 6
Branch analysis from position: 6
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 13
filename:       /in/SaXju
function name:  (null)
number of ops:  15
compiled vars:  !0 = $ref, !1 = $parameter
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $2      'ReflectionFunction'
          1        SEND_VAL_EX                                              'printf'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $2
    4     4        FETCH_OBJ_R                                      ~5      !0, 'getParameters'
          5      > FE_RESET_R                                       $6      ~5, ->13
          6    > > FE_FETCH_R                                               $6, !1, ->13
    5     7    >   INIT_FCALL                                               'var_dump'
          8        INIT_METHOD_CALL                                         !1, 'isOptional'
          9        DO_FCALL                                      0  $7      
         10        SEND_VAR                                                 $7
         11        DO_ICALL                                                 
    4    12      > JMP                                                      ->6
         13    >   FE_FREE                                                  $6
    6    14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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