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<?php $string = 'application/vnd.github.full+json'; $pattern = '#(?P<maintype>[a-z].*)/(?P<fullsubtype>(?P<subtype>[a-z0-9.-]*)([+](?P<submediatype>[a-z]*)))?#i'; preg_match($pattern, $string, $matches); var_dump($matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6ol6Z
function name:  (null)
number of ops:  11
compiled vars:  !0 = $string, !1 = $pattern, !2 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'application%2Fvnd.github.full%2Bjson'
    4     1        ASSIGN                                                   !1, '%23%28%3FP%3Cmaintype%3E%5Ba-z%5D.%2A%29%2F%28%3FP%3Cfullsubtype%3E%28%3FP%3Csubtype%3E%5Ba-z0-9.-%5D%2A%29%28%5B%2B%5D%28%3FP%3Csubmediatype%3E%5Ba-z%5D%2A%29%29%29%3F%23i'
    5     2        INIT_FCALL                                               'preg_match'
          3        SEND_VAR                                                 !1
          4        SEND_VAR                                                 !0
          5        SEND_REF                                                 !2
          6        DO_ICALL                                                 
    7     7        INIT_FCALL                                               'var_dump'
          8        SEND_VAR                                                 !2
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0

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