百度学术
$list_arr = getbaiduxueshu($row['name']);
$list_arr = explode('(',$list_arr);
$list_arr = explode(')',$list_arr[1]);
$list_arr = json_decode($list_arr[0]);
$list_arr = $list_arr->s;

//百度学术平台热词地址
function getbaiduxueshu($keyname = '100'){
$url = 'http://nssug.baidu.com/su?wd='.$keyname.'&prod=xueshu&json=1&ie=utf-8&cb=jQuery1102054196148383364_1500255388940&_=1500255388947';
return (file_get_contents($url));
}

http://nssug.baidu.com/su?wd=%E4%B8%89%E5%86%9C&prod=xueshu&json=1&ie=utf-8&cb=jQuery1102054196148383364_1500255388940&_=1500255388947

360

http://sug.so.360.cn/suggest?callback=suggest_so&encodein=utf-8&encodeout=utf-8&format=xml&word=seo

命令行

http://www.hekaiyu.com/seogongju/110.html

curl-s'http://sug.so.360.cn/suggest?callback=suggest_so&encodein=utf-8&encodeout=utf-8&format=xml&word=seo'|grep"<word>"|grep-oP'(?<=<word>).*?(?=</word>)'

百度

https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su?wd=%E5%AE%97%E5%8A%9B&sugmode=2&json=1&p=3&sid=&req=2&bs=%E5%AE%97%E5%8A%9B&pbs=%E5%AE%97%E5%8A%9B&csor=3&pwd=%E5%AE%97%E5%8A%9B&cb=jQuery110206449440490690221_1491446428327&_=1491446428426&qq-pf-to=pcqq.group

https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su?wd=%E5%AE%97%E5%8A%9B&sugmode=2&json=1&p=3&sid=&req=2&bs=%E5%AE%97%E5%8A%9B&pbs=%E5%AE%97%E5%8A%9B&csor=3&pwd=%E5%AE%97%E5%8A%9B&cb=jQuery110206449440490690221_1491446428327&_=1491446428426&qq-pf-to=pcqq.group

粘贴到地址栏就可以看到效果

jQuery110206449440490690221_1491446428327({"q":"好牙膏","p":false,"bs":"好牙膏","csor":"3","status":0,"g":[ { "q": "好牙膏推荐", "t": "n", "st": { "q": "好牙膏推荐", "new": 0 } }, { "q": "壳好牙膏", "t": "n", "st": { "q": "壳好牙膏", "new": 0 } }, { "q": "美白效果最好牙膏", "t": "n", "st": { "q": "美白效果最好牙膏", "new": 0 } }, { "q": "好牙膏 绿蓝红黑", "t": "n", "st": { "q": "好牙膏 绿蓝红黑", "new": 0 } }, { "q": "好牙膏品牌", "t": "n", "st": { "q": "好牙膏品牌", "new": 0 } }, { "q": "好牙膏有什么标识", "t": "n", "st": { "q": "好牙膏有什么标识", "new": 0 } }, { "q": "什么牙膏好", "t": "n", "st": { "q": "什么牙膏好", "new": 0 } }, { "q": "好牙膏中国造", "t": "n", "st": { "q": "好牙膏中国造", "new": 0 } } ],"s":["好牙膏推荐","壳好牙膏","美白效果最好牙膏","好牙膏 绿蓝红黑","好牙膏品牌","好牙膏有什么标识","什么牙膏好","好牙膏中国造"]});

万方热词

//从万方数据平台抓取热词
function Posts($url, $post = null,$Token = ''){
$context = array();

if (is_array($post))
{
ksort($post);

$context['http'] = array
(

'timeout'=>60,
// 'header'=>"Token: ".$Token,
'header' => "Content-type: application/x-www-form-urlencoded ",
'method' => 'POST',
'content' => http_build_query($post, '', '&'),
);
}

return file_get_contents($url, false, stream_context_create($context));
}

//万方数据平台热词地址
function getwanfang($pageNo = '100' ,$pageSize = '1000'){
$url = 'http://new.wanfangdata.com.cn/hotTheme.do';
$data = array('pageNo' => $pageNo, 'pageSize' => $pageSize );
$json_list = Posts($url, $data);
return json_decode($json_list);
}