$file = file("sitemap.txt");
$count = count($file);
$num = "100";
$random_keys = array_rand($file,$num);
$urls = array();
for($i = 0 ; $i<$num; $i++){
$urls[]=$file[$random_keys[$i]];
}
$api = ';
$ch = curl_init();
$options = array(
CURLOPT_URL => $api,
CURLOPT_POST => true,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POSTFIELDS => implode("\n", $urls),
CURLOPT_HTTPHEADER => array('Content-Type: text/plain'),
);
curl_setopt_array($ch, $options);
$result = curl_exec($ch);
echo $result;