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PHP redens keywords in text content, keyword optimization, Taobao keywords, p2p key

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2016-07-29 08:53:321160browse

Sometimes when we display an article, we may need to highlight certain keywords in red so that we can quickly find and locate these keywords. Let’s take a look at the specific implementation code.

/**
  * 关键字套红方法
  * 
  * @access public
  * @param array $options 参数数组
  *  <li> $info_arr  array  内容</li>
  *  <li> $search_arr array  关键词数组 </li>
  * @return int or array
  */
  function set_arr_keyword_red($info_arr, $search_arr)
 {
  foreach ($search_arr as $search_str)
  {
   foreach ($info_arr as $key => $info)
   {
    if(in_array($key,array('item_title','keywords', 'photo_title', 'photo_site','content',)))
    {
     $info = strip_tags($info);
     $info = str_replace(' ', '', $info);
     $q_str_pos = stripos($info, $search_str);
     if (false!==$q_str_pos)
     {
      $info = csubstr($info, $q_str_pos+150);
      $temp = csubstr($info,$q_str_pos-150);
      $info = substr($info, strlen($temp), 300);
      $info = preg_replace("/{$search_str}/i", "<font color='red'>{$search_str}</font>", $info);
 
      if($info_arr['match_key']=='')
      $info_arr['match_key'] = $key;
     }
     else
     {
      $info = csubstr($info,300);
     }
    }
    $info_arr[$key] = $info;
   }
  }
  return $info_arr;
 }
 
$str = 'woloveu小君';
$info_arr = array('photo_title' => 'womejiojd我们都围殴防静低屁啊小君鸡冻啊泡脚盆大');
$search_arr = array('小君');
$ret = set_arr_keyword_red($info_arr, $search_arr);
dump($ret );

The above introduces how PHP redens keywords in text content, including keywords and PHP content. I hope it will be helpful to friends who are interested in PHP tutorials.

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