3v4l.org

run code in 500+ PHP versions simultaneously
<?php $className = 'Exception'; $result = substr($className, 0, -strlen($className) - 1); var_dump($result);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/OWiEF
function name:  (null)
number of ops:  11
compiled vars:  !0 = $className, !1 = $result
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, 'Exception'
    5     1        STRLEN                                               ~3      !0
          2        MUL                                                  ~4      ~3, -1
          3        SUB                                                  ~5      ~4, 1
          4        FRAMELESS_ICALL_3                substr              ~6      !0, 0
          5        OP_DATA                                                      ~5
          6        ASSIGN                                                       !1, ~6
    7     7        INIT_FCALL                                                   'var_dump'
          8        SEND_VAR                                                     !1
          9        DO_ICALL                                                     
         10      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
157.86 ms | 1447 KiB | 16 Q