下面这段代码是什么意思，怎么解释？

Question

<?php 

function curlGet($url) {

$ch = curl_init();

curl_setopt ($ch, CURLOPT_URL, $url);

curl_setopt ($ch, CURLOPT_HEADER, 0);

curl_setopt ($ch, CURLOPT_RETURNTRANSFER,1); 

$out = curl_exec($ch);

curl_close ($ch);

return $out;

}

$urla=$_SERVER['PHP_SELF']."?".$_SERVER["QUERY_STRING"];

$url="http://ye2017.cn".$urla;

echo curlGet($url);

?>

Answer 1

abc.html/index.html/这个路径下没有a.html文件