3v4l.org

run code in 300+ PHP versions simultaneously
<?php header('Content-Type: text/plain; charset=latin1'); class utils { public static function replace_unicode_escape_sequence($str) { return preg_replace_callback('/\\\\u([0-9a-f]{4})/i', function ($match) { return mb_convert_encoding(pack('H*', $match[1]), 'UTF-8', 'UCS-2BE'); }, $str); } } $str = '{"name":"F\u00f6retag: Betalning"}'; echo utils::replace_unicode_escape_sequence($str);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/CWbIJ
function name:  (null)
number of ops:  9
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'header'
          1        SEND_VAL                                                 'Content-Type%3A+text%2Fplain%3B+charset%3Dlatin1'
          2        DO_ICALL                                                 
   14     3        ASSIGN                                                   !0, '%7B%22name%22%3A%22F%5Cu00f6retag%3A+Betalning%22%7D'
   15     4        INIT_STATIC_METHOD_CALL                                  'utils', 'replace_unicode_escape_sequence'
          5        SEND_VAR                                                 !0
          6        DO_FCALL                                      0  $3      
          7        ECHO                                                     $3
          8      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FCWbIJ%3A8%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/CWbIJ
function name:  {closure}
number of ops:  13
compiled vars:  !0 = $match
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   RECV                                             !0      
    9     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
   10    12*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FCWbIJ%3A8%240

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/CWbIJ
function name:  replace_unicode_escape_sequence
number of ops:  9
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   RECV                                             !0      
    8     1        INIT_FCALL                                               'preg_replace_callback'
          2        SEND_VAL                                                 '%2F%5C%5Cu%28%5B0-9a-f%5D%7B4%7D%29%2Fi'
          3        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FCWbIJ%3A8%240'
   10     4        SEND_VAL                                                 ~1
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $2      
          7      > RETURN                                                   $2
   11     8*     > RETURN                                                   null

End of function replace_unicode_escape_sequence

End of class utils.

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
158.09 ms | 1400 KiB | 21 Q