PHP curl 封装 GET及POST方法

function curl_get($url, array $params = array(), $timeout = 5)
{
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
    $file_contents = curl_exec($ch);
    curl_close($ch);
    return $file_contents;
}

function curl_post($url, array $params = array(), $timeout)
{
    $ch = curl_init();//初始化
    curl_setopt($ch, CURLOPT_URL, $url);//抓取指定网页
    curl_setopt($ch, CURLOPT_HEADER, 0);//设置header
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//要求结果为字符串且输出到屏幕上
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
    curl_setopt($ch, CURLOPT_POST, 1);//post提交方式
    curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
    $data = curl_exec($ch);//运行curl
    curl_close($ch);
    return ($data);
}

function curl_get_https($url)
{
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_USERAGENT, ‘Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.1 Safari/537.11‘);
    $res = curl_exec($ch);
    $rescode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);
    return $res;
}