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<?php $string = "hello this is a string and hello but this is a string hello but this is a string and "; if (preg_match_all('~(?=(\b(\w.{9,})(?=.*?\b\2)))~u', $string, $m)) { echo array_reduce($m[1], function ($a, $b) { return strlen($a ?? '') > strlen($b ?? '') ? $a : $b; }); }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 14
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
filename:       /in/hv5MN
function name:  (null)
number of ops:  15
compiled vars:  !0 = $string, !1 = $m
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'hello+this+is+a+string+and+hello+but+this+is+a+string+hello+but+this+is+a+string+and+'
    4     1        INIT_FCALL                                               'preg_match_all'
          2        SEND_VAL                                                 '%7E%28%3F%3D%28%5Cb%28%5Cw.%7B9%2C%7D%29%28%3F%3D.%2A%3F%5Cb%5C2%29%29%29%7Eu'
          3        SEND_VAR                                                 !0
          4        SEND_REF                                                 !1
          5        DO_ICALL                                         $3      
          6      > JMPZ                                                     $3, ->14
    5     7    >   INIT_FCALL                                               'array_reduce'
          8        FETCH_DIM_R                                      ~4      !1, 1
          9        SEND_VAL                                                 ~4
         10        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2Fhv5MN%3A5%240'
         11        SEND_VAL                                                 ~5
         12        DO_ICALL                                         $6      
         13        ECHO                                                     $6
    6    14    > > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2Fhv5MN%3A5%240:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 10, Position 2 = 12
Branch analysis from position: 10
1 jumps found. (Code = 42) Position 1 = 13
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hv5MN
function name:  {closure}
number of ops:  15
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        COALESCE                                         ~2      !0
          3        QM_ASSIGN                                        ~2      ''
          4        STRLEN                                           ~3      ~2
          5        COALESCE                                         ~4      !1
          6        QM_ASSIGN                                        ~4      ''
          7        STRLEN                                           ~5      ~4
          8        IS_SMALLER                                               ~5, ~3
          9      > JMPZ                                                     ~6, ->12
         10    >   QM_ASSIGN                                        ~7      !0
         11      > JMP                                                      ->13
         12    >   QM_ASSIGN                                        ~7      !1
         13    > > RETURN                                                   ~7
         14*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2Fhv5MN%3A5%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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141.69 ms | 1407 KiB | 17 Q