3v4l.org

run code in 300+ PHP versions simultaneously
<?php $mystring = 'abcdbbbbbfbef'; echo strrpos($mystring, "s").">>"; echo Substr($mystring, 0, strrpos($mystring, "s"));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/2aIRf
function name:  (null)
number of ops:  18
compiled vars:  !0 = $mystring
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'abcdbbbbbfbef'
    3     1        INIT_FCALL                                               'strrpos'
          2        SEND_VAR                                                 !0
          3        SEND_VAL                                                 's'
          4        DO_ICALL                                         $2      
          5        CONCAT                                           ~3      $2, '%3E%3E'
          6        ECHO                                                     ~3
    4     7        INIT_FCALL                                               'substr'
          8        SEND_VAR                                                 !0
          9        SEND_VAL                                                 0
         10        INIT_FCALL                                               'strrpos'
         11        SEND_VAR                                                 !0
         12        SEND_VAL                                                 's'
         13        DO_ICALL                                         $4      
         14        SEND_VAR                                                 $4
         15        DO_ICALL                                         $5      
         16        ECHO                                                     $5
         17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
149.8 ms | 1394 KiB | 17 Q