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<?php $items = array( '<title>Something (TV 1999-2000)</title>' ,'<title>Something (1999-2000)</title>' ,'<title>Something (19999-2000)</title>' ,'<title>Something (99000)</title>' ,'<title>Something (2000)</title>' ); $regex = "/<title>.*?\(.*?(\d{4}(-\d{4})?).*?\)<\/title>/is"; foreach($items AS $k => $str) { preg_match($regex, $str, $matches[$k]); } print_r($matches); ?>
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 12
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 12
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 12
filename:       /in/4Kl2Z
function name:  (null)
number of ops:  17
compiled vars:  !0 = $items, !1 = $regex, !2 = $str, !3 = $k, !4 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   11     1        ASSIGN                                                   !1, '%2F%3Ctitle%3E.%2A%3F%5C%28.%2A%3F%28%5Cd%7B4%7D%28-%5Cd%7B4%7D%29%3F%29.%2A%3F%5C%29%3C%5C%2Ftitle%3E%2Fis'
   14     2      > FE_RESET_R                                       $7      !0, ->12
          3    > > FE_FETCH_R                                       ~8      $7, !2, ->12
          4    >   ASSIGN                                                   !3, ~8
   15     5        INIT_FCALL                                               'preg_match'
          6        SEND_VAR                                                 !1
          7        SEND_VAR                                                 !2
          8        FETCH_DIM_W                                      $10     !4, !3
          9        SEND_REF                                                 $10
         10        DO_ICALL                                                 
   14    11      > JMP                                                      ->3
         12    >   FE_FREE                                                  $7
   18    13        INIT_FCALL                                               'print_r'
         14        SEND_VAR                                                 !4
         15        DO_ICALL                                                 
   20    16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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