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<?php class utils { private static function replace_unicode_escape_sequence($match) { return mb_convert_encoding(pack('H*', $match[1]), 'UTF-8', 'UCS-2BE'); } public static function to_decode($str) { return preg_replace_callback('/\\\\u([0-9a-f]{4})/i', '$this::replace_unicode_escape_sequence', $str); } } $str = '{"name":"F\u00f6retag: Betalning"}'; echo utils::to_decode($str);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MFIGa
function name:  (null)
number of ops:  6
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   13     0  E >   ASSIGN                                                   !0, '%7B%22name%22%3A%22F%5Cu00f6retag%3A+Betalning%22%7D'
   14     1        INIT_STATIC_METHOD_CALL                                  'utils', 'to_decode'
          2        SEND_VAR                                                 !0
          3        DO_FCALL                                      0  $2      
          4        ECHO                                                     $2
          5      > RETURN                                                   1

Class utils:
Function replace_unicode_escape_sequence:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MFIGa
function name:  replace_unicode_escape_sequence
number of ops:  13
compiled vars:  !0 = $match
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
    5     1        INIT_FCALL                                               'mb_convert_encoding'
          2        INIT_FCALL                                               'pack'
          3        SEND_VAL                                                 'H%2A'
          4        FETCH_DIM_R                                      ~1      !0, 1
          5        SEND_VAL                                                 ~1
          6        DO_ICALL                                         $2      
          7        SEND_VAR                                                 $2
          8        SEND_VAL                                                 'UTF-8'
          9        SEND_VAL                                                 'UCS-2BE'
         10        DO_ICALL                                         $3      
         11      > RETURN                                                   $3
    6    12*     > RETURN                                                   null

End of function replace_unicode_escape_sequence

Function to_decode:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MFIGa
function name:  to_decode
number of ops:  8
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   RECV                                             !0      
    9     1        INIT_FCALL                                               'preg_replace_callback'
          2        SEND_VAL                                                 '%2F%5C%5Cu%28%5B0-9a-f%5D%7B4%7D%29%2Fi'
          3        SEND_VAL                                                 '%24this%3A%3Areplace_unicode_escape_sequence'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $1      
          6      > RETURN                                                   $1
   10     7*     > RETURN                                                   null

End of function to_decode

End of class utils.

Generated using Vulcan Logic Dumper, using php 8.0.0


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