php - Making array after explode -

i want create array input string. before code, i've tried explode, array remains length 1. each string i've tried still 1 in array[0]. here's code far:

public function word() {     $kata = array($this->kal->gethasil());     if (!empty($kata)) {          $n = count($kata)          ($i = 0; $i < $n; $i++) {             $imin = $i;             ($j = $i; $j < $n; $j++) {                 if ($kata[$j] < $kata[$imin]) {                     $imin = $j;                 }             }             $temp = $kata[$i];             $kata[$i] = $kata[$imin];             $kata[$imin] = $temp;         }          ($i = 0; $i < $n; $i++) {             echo "$kata[$i] ";         }     } }  public function tokenize() {     $temp = $this->kal->gethasil();     $token = explode(" ", $temp);     return $token; }  $hasil = $pp->tokenize(); ($i = 0; $i < sizeof($hasil); $i++) {     $st = new stemming();     $hasil[$i] = $pp->singkatan($hasil[$i]);     $hasil[$i] = $st->stem($hasil[$i]);     $hasil[$i] = $pp->stopword($hasil[$i]);     //echo "$hasil[$i] ";      $hb = new hitungbobot($hasil[$i]);     $hb->word(); } 

how fix this?

you can use globar var, see code:

    public function word(){ $kata = array($this->kal->gethasil());         global $output;          if(!empty($kata)){                  $ar= count($kata)                 $output += $ar;             }       public function tokenize() {         $temp = $this->kal->gethasil();         $token = explode(" ",$temp);         return $token;     }      $output = 0;      $hasil = $pp->tokenize();                 for($i=0; $i<sizeof($hasil); $i++) {                      $st = new stemming();                     $hasil[$i] = $pp->singkatan($hasil[$i]);                     $hasil[$i] = $st->stem($hasil[$i]);                     $hasil[$i] = $pp->stopword($hasil[$i]);                     //echo "$hasil[$i] ";                      $hb = new hitungbobot($hasil[$i]);                       $hb->word();                 }  echo $output;