php curl请求http和https

常规curl请求：

$url = "http://www.jb51.net";
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_HEADER, 1);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$data = curl_exec($curl);
curl_close($curl);
var_dump($data);

使用curl请求HTTPS

$url = "https://www.jb51.net";
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_HEADER, 1);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);//这个是重点。
$data = curl_exec($curl);
curl_close($curl);
var_dump($data);

当请求https的数据时，会要求证书，这时候，加上下面这两个参数，规避ssl的证书检查

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); // https请求 不验证证书和hosts
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);

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