cURL流图像的快速方法

Question

我知道cURL的性能非常快，但是由于我正在流式传输的文件位于其他服务器上，因此需要4-5分钟才能完成。

有什么办法可以在10-15秒内完成100个请求？我尝试了cURL的多进程，即使使用file_get_contents（），效果仍然相同。

谢谢

<?php 
require_once('FileMaker.php');

use \setasign\Fpdi;
use \setasign\Fpdi\PdfParser\StreamReader;
require_once('FPDi/vendor/setasign/fpdf/fpdf.php');
require_once('FPDi/vendor/autoload.php');
require_once('FPDi/src/PdfParser/StreamReader.php');

$pdf = new Fpdi\Fpdi();

$fm = new FileMaker('database sample', 'location sample', 'username sample', 
'password sample');

$connected = $fm->getLayout('Accessioning | Desktop  | Form');
if (FileMaker::isError($connected)) :
 // echo '<script> alert("NOT CONNECTED"); </script>';   
endif;
 //echo '<script> alert("CONNECTED"); </script>';   


$record_gathered = $fm->getRecordByID("Accessioning | Desktop  | Form", "18226");
$related_records = $record_gathered->getRelatedSet('Library | Accession Catalog Items');
$result_gathered_information = array();
$result = array();


if (!FileMaker::iserror ($related_records)) {
 foreach($related_records as $related_record){
  @$counter = $counter + 1;

    if ($counter <= 3){
         $fetchURL = 'http://sampleURL/SuperContainer/RawData/Library/Catalog/Items/'.  $related_record->getField('Library | Accession Catalog Items::recno') . '/?a=1';

         $result_gathered_information[] =  $fetchURL;
    }

  }
}

foreach ($result_gathered_information as $detectedinfo){

  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $detectedinfo);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  $result[] = curl_exec($ch);
  curl_close($ch);

}

foreach ($result as $file) {

 $pageCount  = $pdf->setSourceFile(StreamReader::createByString($file));

    for ($pageNo = 1; $pageNo <= $pageCount; $pageNo++) {
    // import a page
    $templateId = $pdf->importPage($pageNo);
    // get the size of the imported page
    $size = $pdf->getTemplateSize($templateId);

    // add a page with the same orientation and size
    $pdf->AddPage($size['orientation'], $size);

    // use the imported page
    $pdf->useTemplate($templateId);

    $pdf->SetFont('Helvetica');
    $pdf->SetXY(5, 5);
   }
  }
$pdf->Output();