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<?php $str= "word1 word2 word3 word4 "; var_export(str_word_count($str, 1, '0..9'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/dOP7H
function name:  (null)
number of ops:  10
compiled vars:  !0 = $str
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, 'word1+word2+word3+word4+'
    5     1        INIT_FCALL                                                   'var_export'
          2        INIT_FCALL                                                   'str_word_count'
          3        SEND_VAR                                                     !0
          4        SEND_VAL                                                     1
          5        SEND_VAL                                                     '0..9'
          6        DO_ICALL                                             $2      
          7        SEND_VAR                                                     $2
          8        DO_ICALL                                                     
          9      > RETURN                                                       1

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