import hmac
import base64
from hashlib import sha1
key = '0ba013e361b64a75b85dce6945322596'
url = 'https://adx.toutiao.com/adx/retargeting-portal/api?
&type=2&source=1001×tamp=1491464202'
msg = hmac.new(key, url, sha1).hexdigest()
signature = base64.urlsafe_b64encode(msg)
# NDU3ODYzZDRmODJmNzQxODViYWY3Njc3OWZkMmM4NTgxMTJlYzM1Ng==
final_url = url + "&signature=" + signature以上是python的加密，求大拿php對應的加密演算法，搞了半天沒對接上？
$token = '0ba013e361b64a75b85dce6945322596';
$clientStr = 'https://adx.toutiao.com/adx/r...';
echo base64_encode(hashreken(Mcli;"