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<?php $matches=array(); $string = 'This is a [templateVar]'; preg_match_all("/[\[\]]/", $string, $matches); var_dump($matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/jiMMs
function name:  (null)
number of ops:  11
compiled vars:  !0 = $matches, !1 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, 'This+is+a+%5BtemplateVar%5D'
    5     2        INIT_FCALL                                               'preg_match_all'
          3        SEND_VAL                                                 '%2F%5B%5C%5B%5C%5D%5D%2F'
          4        SEND_VAR                                                 !1
          5        SEND_REF                                                 !0
          6        DO_ICALL                                                 
    6     7        INIT_FCALL                                               'var_dump'
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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