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<?php $pattern = '#^(?:(?:/(?P<peekaboo>[^/\.,;?\n]+))?/(?P<action>[^/\.,;?\n]+))?$#'; if (preg_match($pattern, '/foo/bar', $matches)) { var_dump( $matches); }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 10
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 10
filename:       /in/Lqj1E
function name:  (null)
number of ops:  11
compiled vars:  !0 = $pattern, !1 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%23%5E%28%3F%3A%28%3F%3A%2F%28%3FP%3Cpeekaboo%3E%5B%5E%2F%5C.%2C%3B%3F%5Cn%5D%2B%29%29%3F%2F%28%3FP%3Caction%3E%5B%5E%2F%5C.%2C%3B%3F%5Cn%5D%2B%29%29%3F%24%23'
    5     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAR                                                 !0
          3        SEND_VAL                                                 '%2Ffoo%2Fbar'
          4        SEND_REF                                                 !1
          5        DO_ICALL                                         $3      
          6      > JMPZ                                                     $3, ->10
    7     7    >   INIT_FCALL                                               'var_dump'
          8        SEND_VAR                                                 !1
          9        DO_ICALL                                                 
    8    10    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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