title: Php script issue with explode function
body: <p>I have a website that splits my long tail keywords into many small ones, like this for example: </p>
  
  <p>I have a desired keyword which I want to look like this: </p>
  
  <p><code>fishing is relaxing</code></p>
  
  <p>But I get instead of that, I get:</p>
  
  <p><code>fishing,is,relaxing</code></p>
  
  <p>I don't know much about PHP but I think its a explode thing in function script</p>
  
  <pre><code>function get_popular_tags()
  {
      global $conn;
  
      $tags       = array();
      $sql        = "SELECT keyword FROM video ORDER BY viewnumber LIMIT 10";
      $rs         = $conn-&gt;execute($sql);
      $rows       = $rs-&gt;getrows();
      foreach ( $rows as $row )
      {
          $tag_arr = explode(' ', $row['"keyword"']);
          foreach ( $tag_arr as $tag )
          {
              if ( strlen($tag) &gt; 3 &amp;&amp; !in_array($tag, $tags) )
              {
                  $tags[] = $tag;
              }
          }
      }
  }
  </code></pre>