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<?php $comment = '#ああああ いいいいい #うううう'; preg_match('/#[^ ]+(?= .*(#.*$))/u', $comment, $arr); var_dump($arr);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/80Inv
function name:  (null)
number of ops:  10
compiled vars:  !0 = $comment, !1 = $arr
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%23%E3%81%82%E3%81%82%E3%81%82%E3%81%82%E3%80%80%E3%81%84%E3%81%84%E3%81%84%E3%81%84%E3%81%84+%23%E3%81%86%E3%81%86%E3%81%86%E3%81%86'
    5     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%23%5B%5E%E3%80%80%5D%2B%28%3F%3D%E3%80%80.%2A%28%23.%2A%24%29%29%2Fu'
          3        SEND_VAR                                                 !0
          4        SEND_REF                                                 !1
          5        DO_ICALL                                                 
    7     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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