3v4l.org

run code in 300+ PHP versions simultaneously
<?php $preg_match('/[a-z].*\s?\!$/', 'hello world!', $matches); print_r($matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/g4Nvt
function name:  (null)
number of ops:  9
compiled vars:  !0 = $preg_match, !1 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_DYNAMIC_CALL                                        !0
          1        SEND_VAL_EX                                              '%2F%5Ba-z%5D.%2A%5Cs%3F%5C%21%24%2F'
          2        SEND_VAL_EX                                              'hello+world%21'
          3        SEND_VAR_EX                                              !1
          4        DO_FCALL                                      0          
    3     5        INIT_FCALL                                               'print_r'
          6        SEND_VAR                                                 !1
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
155.71 ms | 1394 KiB | 15 Q