3v4l.org

run code in 300+ PHP versions simultaneously
<?php vardump( substr('en-US', 0, 2) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ha0n6
function name:  (null)
number of ops:  9
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL_BY_NAME                                       'vardump'
    4     1        INIT_FCALL                                               'substr'
          2        SEND_VAL                                                 'en-US'
          3        SEND_VAL                                                 0
          4        SEND_VAL                                                 2
          5        DO_ICALL                                         $0      
          6        SEND_VAR_NO_REF_EX                                       $0
          7        DO_FCALL                                      0          
    5     8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
144.7 ms | 1394 KiB | 15 Q