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<?php $test=["abcd/abcd_.mp3"]; foreach ($test as $t) echo preg_replace("/abcd([^_.])/", "defg" . "\${1}", $t);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 10
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 10
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 10
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 10
filename:       /in/4XREf
function name:  (null)
number of ops:  12
compiled vars:  !0 = $test, !1 = $t
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1      > FE_RESET_R                                       $3      !0, ->10
          2    > > FE_FETCH_R                                               $3, !1, ->10
    4     3    >   INIT_FCALL                                               'preg_replace'
          4        SEND_VAL                                                 '%2Fabcd%28%5B%5E_.%5D%29%2F'
          5        SEND_VAL                                                 'defg%24%7B1%7D'
          6        SEND_VAR                                                 !1
          7        DO_ICALL                                         $4      
          8        ECHO                                                     $4
    3     9      > JMP                                                      ->2
         10    >   FE_FREE                                                  $3
    4    11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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