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<?php $re = '/^\h*+\K.{0,11}\S(?!\S)/m'; $str = 'this is a test sentence this is a test sentence a b c'; preg_match_all($re, $str, $matches); var_export($matches[0]);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/56aBS
function name:  (null)
number of ops:  12
compiled vars:  !0 = $re, !1 = $str, !2 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%2F%5E%5Ch%2A%2B%5CK.%7B0%2C11%7D%5CS%28%3F%21%5CS%29%2Fm'
    4     1        ASSIGN                                                   !1, 'this+is+a+test+sentence%0A++++++this+is+a++test+sentence++%0Aa%0A+++++++++++b%0A++++++++++++c'
   10     2        INIT_FCALL                                               'preg_match_all'
          3        SEND_VAR                                                 !0
          4        SEND_VAR                                                 !1
          5        SEND_REF                                                 !2
          6        DO_ICALL                                                 
   11     7        INIT_FCALL                                               'var_export'
          8        FETCH_DIM_R                                      ~6      !2, 0
          9        SEND_VAL                                                 ~6
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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