3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = ' Санкт-Петербург'; $lastPos = mb_strripos($str, 'Санкт-Петербург'); var_dump($lastPos); var_dump(substr($str, 0, $lastPos));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MKmUp
function name:  (null)
number of ops:  18
compiled vars:  !0 = $str, !1 = $lastPos
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '+%D0%A1%D0%B0%D0%BD%D0%BA%D1%82-%D0%9F%D0%B5%D1%82%D0%B5%D1%80%D0%B1%D1%83%D1%80%D0%B3'
    3     1        INIT_FCALL                                               'mb_strripos'
          2        SEND_VAR                                                 !0
          3        SEND_VAL                                                 '%D0%A1%D0%B0%D0%BD%D0%BA%D1%82-%D0%9F%D0%B5%D1%82%D0%B5%D1%80%D0%B1%D1%83%D1%80%D0%B3'
          4        DO_ICALL                                         $3      
          5        ASSIGN                                                   !1, $3
    4     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                                 
    5     9        INIT_FCALL                                               'var_dump'
         10        INIT_FCALL                                               'substr'
         11        SEND_VAR                                                 !0
         12        SEND_VAL                                                 0
         13        SEND_VAR                                                 !1
         14        DO_ICALL                                         $6      
         15        SEND_VAR                                                 $6
         16        DO_ICALL                                                 
         17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
170.62 ms | 1394 KiB | 19 Q