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<?php $type = "abc * def"; var_dump(preg_match_all('/[([a-Z]+)(\s[\+\*]\s)?]/', $type, $m)); var_dump($m);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qKgIv
function name:  (null)
number of ops:  13
compiled vars:  !0 = $type, !1 = $m
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'abc+%2A+def'
    3     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'preg_match_all'
          3        SEND_VAL                                                 '%2F%5B%28%5Ba-Z%5D%2B%29%28%5Cs%5B%5C%2B%5C%2A%5D%5Cs%29%3F%5D%2F'
          4        SEND_VAR                                                 !0
          5        SEND_REF                                                 !1
          6        DO_ICALL                                         $3      
          7        SEND_VAR                                                 $3
          8        DO_ICALL                                                 
    4     9        INIT_FCALL                                               'var_dump'
         10        SEND_VAR                                                 !1
         11        DO_ICALL                                                 
         12      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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