curl_multi_init() curl multi calls

// array of curl handles

$multiCurl = array();

// data to be returned

$result = array();

// multi handle

$mh = curl_multi_init();

foreach ($ids as $i => $id) {

  // URL from which data will be fetched

  $fetchURL = 'https://domain.com&customerId='.$id;

  $multiCurl[$i] = curl_init();

  curl_setopt($multiCurl[$i], CURLOPT_URL,$fetchURL);

  curl_setopt($multiCurl[$i], CURLOPT_HEADER,0);

  curl_setopt($multiCurl[$i], CURLOPT_RETURNTRANSFER,1);

  curl_multi_add_handle($mh, $multiCurl[$i]);

}

$index=null;

do {

  curl_multi_exec($mh,$index);

} while($index > 0);

// get content and remove handles

foreach($multiCurl as $k => $ch) {

  $result[$k] = curl_multi_getcontent($ch);

  curl_multi_remove_handle($mh, $ch);

}

// close

curl_multi_close($mh);