найти кол-во вхождений в строку

<? 
 ini_set('display_errors',1); 
  error_reporting(E_ALL);
  
  
  
  
 $new='hello my friend, hello my friend,hello,goodbuy my friend,hello my friend,goodbuy my friend,goodbuy, hello my friend,';
  
 $new=preg_replace('/[-,.\;:\'\"\d)(!\s]+/'," ",$new);
 $new=preg_replace('/[\s]+/'," ",$new);
 echo $new.'<br>';
  
 preg_match_all('/\b.+?\b\s\b.+?\b/si',$new,$match);
  
 $new=array_count_values($match[0]);
  
 arsort($new);
  
  
 foreach($new as $key=>$value)
 {
 if($value>1 and strlen($key)>1)
 {
 echo $key. '---'.$value.'<br>';
 }
 }
 echo '<pre>';
 print_r($new);
 echo '<pre>';
  
  
  
  ?>

$text = 'hello my friend, hello my friend,hello,goodbuy my friend,hello my friend,goodbuy my friend,goodbuy, hello my friend,';
if (preg_match_all('/\\w+/i', $text, $matches) && $matches[0]) {
    $words = $matches[0];
    $dwords = array();
    $pword = strtolower($words[0]);
    for ($i = 1, $L = count($words); $i < $L; $i++) {
        $cword = strtolower($words[$i]);
        $dword = $pword . ' ' . $cword;
        if (isset($dwords[$dword])) $dwords[$dword]++;
        else $dwords[$dword] = 1;
        $pword = $cword;
    }
    print_r($dwords);
}