PHP功能：使提取的單詞可點擊嗎？

Question

我不能讓點擊提取的單詞本功能：

$text = $curTemplate['name']; 
function extract_keywords($str, $minWordLen = 4, $minWordOccurrences = 1, $asArray = false) 
{ 
    function keyword_count_sort($first, $sec) 
    { 
     return $sec[1] - $first[1]; 
    } 
    $str = preg_replace('/[^\p{L}0-9 ]/', ' ', $str); 
    $str = trim(preg_replace('/\s+/', ' ', $str)); 

    $words = explode(' ', $str); 
    $keywords = array(); 
    while(($c_word = array_shift($words)) !== null) 
    { 
     if(strlen($c_word) < $minWordLen) continue; 

     $c_word = strtolower($c_word); 
     if(array_key_exists($c_word, $keywords)) $keywords[$c_word][1]++; 
     else $keywords[$c_word] = array($c_word, 1); 
    } 
    usort($keywords, 'keyword_count_sort'); 

    $final_keywords = array(); 
    foreach($keywords as $keyword_det) 
    { 
     if($keyword_det[1] < $minWordOccurrences) break; 
     array_push($final_keywords, $keyword_det[0]); 
    } 
    return $asArray ? $final_keywords : implode(', ', $final_keywords); 
} 
//How to use 

//Basic lorem ipsum text to extract the keywords 
$text = "stackoverflow a language independent collaboratively edited question and answer site for programmers"; 

echo extract_keywords($text); 

我想這樣的話：

<a href="http://website.com/search.php?search=<?php echo extract_keywords($text); ?>"><?php echo extract_keywords($text); ?></a> 

，但不以這種方式工作的工作

但沒有關鍵字鏈接:(爲什麼????

<a href="http://website.com/search.php?search=NO KEY"><?php echo extract_keywords($text); ?></a> 

Answer 1

作爲menti oned：

$keywords = extract_keywords($text, 4, 1, true); 

foreach($keywords as $k => $keyword){ 
    echo '<a href="http://website.com/search.php?search=' . $keyword . '">' . $keyword . '</a>' . ($k != (count($keywords) - 1) ? ',' : ''); 
}