php 微信接口API之长链接转短链接代码示例

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<?php
header("Content-Type: text/html; charset=utf-8");
$longurl;
if(isset($_POST['longurl'])){
    $longurl = $_POST['longurl'];
}else{
    die("没有post值进来");
}

//echo $longurl;

$id = "你的AppID";
$secret = "你的AppSecret";
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$id."&secret=".$secret."";

$token = getAccessToken($url);
//echo $token;
//你的长链接
//$longurl = "http://www.baidu.com/";
$data = '{"action":"long2short","long_url":"'.$longurl.'"}';
$shorturl = "https://api.weixin.qq.com/cgi-bin/shorturl?access_token=".$token."";

echo httpPost($shorturl,$data);
//echo "你的长链接是：".$longurl;
//echo "<br />";
//生成的短链接
//echo "生成的短链接是：".$shortArr['short_url'];
//echo $shortArr;

function getAccessToken($url) {
    // access_token 应该全局存储与更新，以下代码以写入到文件中做示例
    $data = json_decode(file_get_contents("access_token.json"));
    if ($data->expire_time < time()) {
      // 如果是企业号用以下URL获取access_token
      $output = httpGet($url);
      $res = (array)json_decode($output);
      $access_token = $res['access_token'];
      if ($access_token) {
        $data->expire_time = time() + 7000;
        $data->access_token = $access_token;
        $fp = fopen("access_token.json", "w");
        fwrite($fp, json_encode($data));
        fclose($fp);
        //echo 'access_token.json读写了一次';
      }
    } else {
      $access_token = $data->access_token;
    }
    return $access_token;
  }

  function httpGet($url) {
    //echo "url = ".$url;
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_TIMEOUT, 500);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($curl, CURLOPT_URL, $url);

    $res = curl_exec($curl);
    curl_close($curl);
    return $res;
  }

  function httpPost($url,$data){
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_TIMEOUT, 500);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "POST");
        curl_setopt($curl, CURLOPT_POSTFIELDS, $data);

        $res = curl_exec($curl);
        curl_close($curl);
        return $res;
  }

  ?>