微信接口API之长链接转短链接代码示例

";
//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;
  }
  
  ?>