3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = '1234567890'; echo preg_replace('/\d{3}\K/', '-', $string, 2); echo "\n---\n"; vprintf('%s-%s-%s', sscanf($string, '%3s%3s%4s')); echo "\n---\n"; echo implode('-', sscanf($string, '%3s%3s%4s'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/gSJje
function name:  (null)
number of ops:  28
compiled vars:  !0 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '1234567890'
    5     1        INIT_FCALL                                               'preg_replace'
          2        SEND_VAL                                                 '%2F%5Cd%7B3%7D%5CK%2F'
          3        SEND_VAL                                                 '-'
          4        SEND_VAR                                                 !0
          5        SEND_VAL                                                 2
          6        DO_ICALL                                         $2      
          7        ECHO                                                     $2
    7     8        ECHO                                                     '%0A---%0A'
    9     9        INIT_FCALL                                               'vprintf'
         10        SEND_VAL                                                 '%25s-%25s-%25s'
         11        INIT_FCALL                                               'sscanf'
         12        SEND_VAR                                                 !0
         13        SEND_VAL                                                 '%253s%253s%254s'
         14        DO_ICALL                                         $3      
         15        SEND_VAR                                                 $3
         16        DO_ICALL                                                 
   11    17        ECHO                                                     '%0A---%0A'
   13    18        INIT_FCALL                                               'implode'
         19        SEND_VAL                                                 '-'
         20        INIT_FCALL                                               'sscanf'
         21        SEND_VAR                                                 !0
         22        SEND_VAL                                                 '%253s%253s%254s'
         23        DO_ICALL                                         $5      
         24        SEND_VAR                                                 $5
         25        DO_ICALL                                         $6      
         26        ECHO                                                     $6
         27      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
197.54 ms | 1005 KiB | 17 Q