3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = '/2013/06/14/chocolate-peanut-butter-cups/'; $regex = '/\/[0-9]{4}\/[0-9]{2}\/[0-9]{2}\/[a-z0-9-]+/'; preg_match($regex, $str, $matches); print_r($matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/CEFVV
function name:  (null)
number of ops:  11
compiled vars:  !0 = $str, !1 = $regex, !2 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%2F2013%2F06%2F14%2Fchocolate-peanut-butter-cups%2F'
    3     1        ASSIGN                                                   !1, '%2F%5C%2F%5B0-9%5D%7B4%7D%5C%2F%5B0-9%5D%7B2%7D%5C%2F%5B0-9%5D%7B2%7D%5C%2F%5Ba-z0-9-%5D%2B%2F'
    4     2        INIT_FCALL                                               'preg_match'
          3        SEND_VAR                                                 !1
          4        SEND_VAR                                                 !0
          5        SEND_REF                                                 !2
          6        DO_ICALL                                                 
    5     7        INIT_FCALL                                               'print_r'
          8        SEND_VAR                                                 !2
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
157.99 ms | 1394 KiB | 17 Q