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<?php $raw = "/3/topic/video1148288/"; preg_match("#/video(\d+)/#", $raw, $matches); $embed = $matches[1]; echo $embed;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/oLPMX
function name:  (null)
number of ops:  10
compiled vars:  !0 = $raw, !1 = $matches, !2 = $embed
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%2F3%2Ftopic%2Fvideo1148288%2F'
    3     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%23%2Fvideo%28%5Cd%2B%29%2F%23'
          3        SEND_VAR                                                 !0
          4        SEND_REF                                                 !1
          5        DO_ICALL                                                 
    4     6        FETCH_DIM_R                                      ~5      !1, 1
          7        ASSIGN                                                   !2, ~5
    6     8        ECHO                                                     !2
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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