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<?php $str= 'There must be a fast and efficient way to split a (text) string at the "nth" occurrence of a needle.'; var_export( preg_split('/([^ ]*\K ){2}/', $str) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Wgutj
function name:  (null)
number of ops:  9
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'There+must+be+a+fast+and+efficient+way+to+split+a+%28text%29+string+at+the+%22nth%22+occurrence+of+a+needle.'
    5     1        INIT_FCALL                                               'var_export'
    6     2        INIT_FCALL                                               'preg_split'
          3        SEND_VAL                                                 '%2F%28%5B%5E+%5D%2A%5CK+%29%7B2%7D%2F'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6        SEND_VAR                                                 $2
          7        DO_ICALL                                                 
    7     8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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