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<?php $some_string = json_encode('ффффффффффффффффффффффффффффффф',JSON_UNESCAPED_UNICODE); $str = mb_substr($some_string, 0,31,'UTF-8'); echo strlen($str); //echo strlen(json_encode(['message' => $some_string])).PHP_EOL; //$encode = base64_encode($some_string); //var_dump($encode); //var_dump([mb_strimwidth(json_encode(array('message' => stripslashes($some_string))),0,200,'...'),strlen(mb_strimwidth(json_encode(array('message' => $some_string)),0,200,'...'))]); //var_dump(json_encode(array('message' => str_replace(array('\u041a','\u0443'), array('',''), $some_string)))); //} //var_dump(mb_detect_encoding($some_string)); //var_dump(strlen(json_encode(array('message' => $some_string))));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/QR3S3
function name:  (null)
number of ops:  15
compiled vars:  !0 = $some_string, !1 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'json_encode'
          1        SEND_VAL                                                 '%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84%D1%84'
          2        SEND_VAL                                                 256
          3        DO_ICALL                                         $2      
          4        ASSIGN                                                   !0, $2
    5     5        INIT_FCALL                                               'mb_substr'
          6        SEND_VAR                                                 !0
          7        SEND_VAL                                                 0
          8        SEND_VAL                                                 31
          9        SEND_VAL                                                 'UTF-8'
         10        DO_ICALL                                         $4      
         11        ASSIGN                                                   !1, $4
    7    12        STRLEN                                           ~6      !1
         13        ECHO                                                     ~6
   25    14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0

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