sqlmap在https情况下的一个错误

<?php
 
$url = "https://xxxxx.com/id=2";
$sql = $_GET[s];
$s = urlencode($sql);
$url = $url.$sql;
// $params = "email=$s&password=aa";
//echo $params;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); // https请求 不验证证书和hosts
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_USERAGENT, ‘Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)‘);
curl_setopt($ch, CURLOPT_TIMEOUT, 15);
  
// curl_setopt($ch, CURLOPT_POST, 1);    // post 提交方式
// curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
  
$output = curl_exec($ch);
curl_close($ch);
echo $output;
$a = strlen($output);
echo $a;