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<?php $matches = []; $a = preg_match('/([H])(?P<word>ello)/', "Hello", $matches); var_dump($matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ptoMe
function name:  (null)
number of ops:  11
compiled vars:  !0 = $matches, !1 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%28%5BH%5D%29%28%3FP%3Cword%3Eello%29%2F'
          3        SEND_VAL                                                 'Hello'
          4        SEND_REF                                                 !0
          5        DO_ICALL                                         $3      
          6        ASSIGN                                                   !1, $3
    7     7        INIT_FCALL                                               'var_dump'
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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