3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ptn = "/^[\pL.\s]+$/u"; $str = "i am letters ."; preg_match($ptn, $str, $matches); print_r($matches); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/4EoOO
function name:  (null)
number of ops:  11
compiled vars:  !0 = $ptn, !1 = $str, !2 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%2F%5E%5B%5CpL.%5Cs%5D%2B%24%2Fu'
    3     1        ASSIGN                                                   !1, 'i+am+letters+.'
    4     2        INIT_FCALL                                               'preg_match'
          3        SEND_VAR                                                 !0
          4        SEND_VAR                                                 !1
          5        SEND_REF                                                 !2
          6        DO_ICALL                                                 
    5     7        INIT_FCALL                                               'print_r'
          8        SEND_VAR                                                 !2
          9        DO_ICALL                                                 
    6    10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
181.77 ms | 1394 KiB | 17 Q