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<?php $test = "http://fashionforvip.com/ru/items/2&page=14&page=145"; var_dump(preg_replace("/[?&]page=[0-9]+/", "", $test));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/2qnJH
function name:  (null)
number of ops:  10
compiled vars:  !0 = $test
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'http%3A%2F%2Ffashionforvip.com%2Fru%2Fitems%2F2%26page%3D14%26page%3D145'
    4     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'preg_replace'
          3        SEND_VAL                                                 '%2F%5B%3F%26%5Dpage%3D%5B0-9%5D%2B%2F'
          4        SEND_VAL                                                 ''
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $2      
          7        SEND_VAR                                                 $2
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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