503嘗試使用Twilio發送短信時出錯

Question

我正在使用Twilio PHP API向我的客戶發送大量短信。
問題是，我只能像發送短信80st，然後我得到了一個服務器錯誤：

Failed to load resource: the server responded with a status of 503 (Backend fetch failed)

嗯，我想這可能是錯誤。
因爲我沒有成功回聲echo "Sent message to $name和twilio短信日誌，我只能看到80發送了200條短信。

什麼會導致此錯誤？

foreach ($usrs as $number => $name) { 
    try{ 
     $sms = $client->account->messages->create(

      // the number we are sending to - Any phone number 
      $number, 

      array(
       // Step 6: Change the 'From' number below to be a valid Twilio number 
       'from' => "xxxxxxxxxxx", 

       // the sms body 
       'body' => "Hey $name. $text" 
      ) 
     ); 

     // Display a confirmation message on the screen 
     echo "Sent message to $name <br>"; 
    } 
    catch (TwilioException $e) { 
     die($e->getCode() . ' : ' . $e->getMessage()); 
    } 
} 

Answer 1

Twilio開發者傳道這裏。

Twilio has a limit of 100 concurrent API requests and will only send 1 message a second。正如Ahmed在評論中所建議的那樣，如果您發送超過100條消息，我建議您在調用API之間添加一個延遲時間。

編輯

sleep(1)添加針對每個消息。這會在發送每封郵件後使頁面延遲一秒。

foreach ($usrs as $number => $name) { 
    try{ 
     $sms = $client->account->messages->create(

      // the number we are sending to - Any phone number 
      $number, 

      array(
       // Step 6: Change the 'From' number below to be a valid Twilio number 
       'from' => "xxxxxxxxxxx", 

       // the sms body 
       'body' => "Hey $name. $text" 
      ) 
     ); 

     // Display a confirmation message on the screen 
     echo "Sent message to $name <br>"; 

     sleep(1); 
    } 
    catch (TwilioException $e) { 
     die($e->getCode() . ' : ' . $e->getMessage()); 
    } 
}