3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = '۱۲۳۴۵۶۷۸۹۰'; var_export( preg_replace( '~.\K(?=(?:.{3})+$)~u', ",", $str ) ); echo "\n---\n"; var_export( preg_replace( '~([۱۲۳۴۵۶۷۸۹۰])(?=(?:[۱۲۳۴۵۶۷۸۹۰]{3})+$)~u', "$1,", $str ) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7IEq8
function name:  (null)
number of ops:  19
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%DB%B1%DB%B2%DB%B3%DB%B4%DB%B5%DB%B6%DB%B7%DB%B8%DB%B9%DB%B0'
    5     1        INIT_FCALL                                               'var_export'
    6     2        INIT_FCALL                                               'preg_replace'
    7     3        SEND_VAL                                                 '%7E.%5CK%28%3F%3D%28%3F%3A.%7B3%7D%29%2B%24%29%7Eu'
    8     4        SEND_VAL                                                 '%2C'
    9     5        SEND_VAR                                                 !0
    6     6        DO_ICALL                                         $2      
    9     7        SEND_VAR                                                 $2
    5     8        DO_ICALL                                                 
   13     9        ECHO                                                     '%0A---%0A'
   15    10        INIT_FCALL                                               'var_export'
   16    11        INIT_FCALL                                               'preg_replace'
   17    12        SEND_VAL                                                 '%7E%28%5B%DB%B1%DB%B2%DB%B3%DB%B4%DB%B5%DB%B6%DB%B7%DB%B8%DB%B9%DB%B0%5D%29%28%3F%3D%28%3F%3A%5B%DB%B1%DB%B2%DB%B3%DB%B4%DB%B5%DB%B6%DB%B7%DB%B8%DB%B9%DB%B0%5D%7B3%7D%29%2B%24%29%7Eu'
   18    13        SEND_VAL                                                 '%241%2C'
   19    14        SEND_VAR                                                 !0
   16    15        DO_ICALL                                         $4      
   19    16        SEND_VAR                                                 $4
   15    17        DO_ICALL                                                 
   21    18      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
238.15 ms | 1011 KiB | 15 Q