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<?php $string="localhost/uploads/images/photo.jpg"; $string2="localhost/uploads/images/photo_thumb.jpg"; $replacement="$1/$2_thumb.$3"; $pattern= '/([\w+\/]*)(?=\/)\/([\w]+(?<!_thumb))\.(\w+)/i'; echo preg_replace($pattern, $replacement, $string); echo "\n\r"; echo preg_replace($pattern, $replacement, $string2);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/jR4in
function name:  (null)
number of ops:  12
compiled vars:  !0 = $string, !1 = $string2, !2 = $replacement, !3 = $pattern
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, 'localhost%2Fuploads%2Fimages%2Fphoto.jpg'
    4     1        ASSIGN                                                       !1, 'localhost%2Fuploads%2Fimages%2Fphoto_thumb.jpg'
    5     2        ASSIGN                                                       !2, '%241%2F%242_thumb.%243'
    6     3        ASSIGN                                                       !3, '%2F%28%5B%5Cw%2B%5C%2F%5D%2A%29%28%3F%3D%5C%2F%29%5C%2F%28%5B%5Cw%5D%2B%28%3F%3C%21_thumb%29%29%5C.%28%5Cw%2B%29%2Fi'
    7     4        FRAMELESS_ICALL_3                preg_replace        ~8      !3, !2
          5        OP_DATA                                                      !0
          6        ECHO                                                         ~8
    8     7        ECHO                                                         '%0A%0D'
    9     8        FRAMELESS_ICALL_3                preg_replace        ~9      !3, !2
          9        OP_DATA                                                      !1
         10        ECHO                                                         ~9
         11      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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