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<?php $str = 'https://www.youtube.com/watch?v=UiyDmqO59QE'; if (preg_match('/(youtu\.be\/|youtube\.com\/(watch\?(.*&)?v=|(embed|v)\/))([^\?&"\'>]+)/', $str, $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/appM6
function name:  (null)
number of ops:  11
compiled vars:  !0 = $str, !1 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DUiyDmqO59QE'
    4     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%28youtu%5C.be%5C%2F%7Cyoutube%5C.com%5C%2F%28watch%5C%3F%28.%2A%26%29%3Fv%3D%7C%28embed%7Cv%29%5C%2F%29%29%28%5B%5E%5C%3F%26%22%27%3E%5D%2B%29%2F'
          3        SEND_VAR                                                 !0
          4        SEND_REF                                                 !1
          5        DO_ICALL                                         $3      
          6      > JMPZ                                                     $3, ->10
    6     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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