PHP根据标题/关键词生成相关词

根据标题调取百度下拉+淘宝下拉词函数，增强页面相关性，也可以用于自动分词，提取相关词。

//根据标题调取相关下拉
function getRelcontentbyTitle($title){
 $word = $title;
 $word = urlencode($word);
 $s = file_get_contents('http://suggest.taobao.com/sug?extras=1&code=utf-8&callback=g_ks_suggest_callback&q='.$word);
 preg_match('/\{.+\}/', $s, $m);
 foreach (json_decode($m[0])->result as $v) {
     $arr[] = $v[0];
 }
 //print_r($arr);
 if ($arr!==""){
 //获取数组中元素的值如下:
  foreach($arr as $key=>$value) {
      echo "".$value." ";
     }
 }
 $data = file_get_contents('http://suggestion.baidu.com/su?wd='.$word);
 $data = mb_convert_encoding($data, 'UTF-8', 'UTF-8,GBK,GB2312,BIG5' );
 $data_temp = strpos($data,"x");
 $data = substr_replace($data,"",$data_temp,17);
 $data = trim($data,");");
 $data = trim($data,"{");
 $data = preg_replace("/q:.+?.e,/",'', $data);
 $data = str_replace("[","",$data);
 $data = str_replace("]","",$data);
 $data = "[".$data."]";
 $data = str_replace(",","},s:",$data);
 $data = str_replace("s:","{\"s\":",$data);//复杂的处理，以符合json格式
 $dc = json_decode($data);
 for ($n=0; $n<=4; $n++)
 {
  $wd[$n]=$dc[$n]->s;
  echo  "".$wd[$n]." ";
 }
}