思路就是判断curl或者soap连接不上对方服务器时候，抛出TimeoutException异常，捕获后做重试处理，其它错误导致的抛出的Exception则按失败处理。

curl处理

  $ch = curl_init($url);
    $options = array(
      CURLOPT_RETURNTRANSFER => true,
      CURLOPT_CONNECTTIMEOUT => 5, //5秒连接时间
      CURLOPT_TIMEOUT    => 30, //30秒请求等待时间
    );
    
    curl_setopt_array($ch, $options);
    $response = curl_exec($ch);
    if ($no = curl_errno($ch)) {
      $error = curl_error($ch);
      curl_close($ch);
      //$no错误码7为连接不上，28为连接上了但请求返回结果超时
      if(in_array(intval($no), [7, 28], true)) {
        throw new TimeoutException('连接或请求超时' . $error, $no);
      }
    }
    curl_close($ch);

soap处理

php文档并没详细写soap超时或者连接不上返回的具体代码，业务处理失败或者连接不上等所有不成功，都会抛出一个SoapFault异常，看了下php的源码发现，还是有定义的

php源文件位置 /ext/soap/php_http.c

定义错误代码内容

add_soap_fault(this_ptr, "HTTP", "Unable to parse URL", NULL, NULL);
add_soap_fault(this_ptr, "HTTP", "Unknown protocol. Only http and https are allowed.", NULL, NULL);
add_soap_fault(this_ptr, "HTTP", "SSL support is not available in this build", NULL, NULL);
add_soap_fault(this_ptr, "HTTP", "Could not connect to host", NULL, NULL);
add_soap_fault(this_ptr, "HTTP", "Failed Sending HTTP SOAP requewww.cppcns.comst", NULL, NULL);
add_soap_fault(this_ptr, "HTTP", "Failed to create stream??", NULL, NULL);
add_soap_fault(this_ptr, "HTTP", "Error Fetching http headers", NULL, NULL);
add_soap_fault(this_ptr, "HTTP", "Error Fetching http body, No Content-Length, connection closed or chunked data", NULL, NULL);
add_soap_fault(this_ptr, "HTTP", "Redirection limit reached, awww.cppcns.combowww.cppcns.comrting", NULL, NULL);
add_soap_fault(this_ptr, "HTTP", "Didn't receive an xml document", NULL, err);
add_soap_fault(this_ptr, "HTTP", "Unknown Content-Encoding", NULL, NULL);
add_soap_fault(this_ptr, "HTTP", "Can't uncompress compressed response", NULL, NULL);
add_soap_fault(this_ptr, "HTTP", http_msg, NULL, NULL);

从代码里可以看出来，连接不上都会返回一个HTTP码,soap并没像curl那样有具体的代码可以区分二者，只利用这个码可以判断是超时或者连接不上等网络问题

具体代码如下

ini_set('default_socket_timeout', 30); //定义响应超时为30秒

    try {
      $options = array(
        'cache_wsdl' => 0,
        'coanywmVzznnection_timeout' => 5, //定义连接超时为5秒
      );
      libxml_disable_entity_loader(false);
      $client = new \SoapClient($url, $options);
      return $client->__soapCall($function_name, $arguments);

    } catch (\SoapFault $e) {
      //超时、连接不上
      if($e->faultcode == 'HTTP'){
        throw new TimeoutException('连接或请求超时', $e->getCode());
      }
    }

可以连接上soap服务，但客户端或者服务端出问题 $e->faultcode 会返回WSDL， 用这个来判断

以上为php使用soap和curl捕获请求超时和连接超时的方法。希望对大家的学习有所帮助，也希望大家多多支持我们。