3v4l.org

run code in 500+ PHP versions simultaneously
<?php $string = "{random_one}[SUBSTRING1] blah [SUBSTRINGX] blah blah {random_two}[SUBSTRING2] blah blah blah{random_one}[SUBSTRING3]"; preg_match_all("/{.+?}\[(.+?)\]/i", $string, $matches); var_dump($matches[1]);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/LPSnD
function name:  (null)
number of ops:  11
compiled vars:  !0 = $string, !1 = $matches
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                       !0, '%7Brandom_one%7D%5BSUBSTRING1%5D+blah+%5BSUBSTRINGX%5D+blah+blah+%7Brandom_two%7D%5BSUBSTRING2%5D+blah+blah+blah%7Brandom_one%7D%5BSUBSTRING3%5D'
    3     1        INIT_FCALL                                                   'preg_match_all'
          2        SEND_VAL                                                     '%2F%7B.%2B%3F%7D%5C%5B%28.%2B%3F%29%5C%5D%2Fi'
          3        SEND_VAR                                                     !0
          4        SEND_REF                                                     !1
          5        DO_ICALL                                                     
    4     6        INIT_FCALL                                                   'var_dump'
          7        FETCH_DIM_R                                          ~4      !1, 1
          8        SEND_VAL                                                     ~4
          9        DO_ICALL                                                     
         10      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
166.53 ms | 2115 KiB | 15 Q