CURL函数的GET和ＰＯＳＴ方式的两种写法（实现ajax跨域调用）

function curl_post($url=‘‘,$postdata=‘‘,$options=array()){
        $ch=curl_init($url);
        curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
        curl_setopt($ch,CURLOPT_POST,1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $postdata);
        curl_setopt($ch, CURLOPT_TIMEOUT, 5);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        if(!empty($options)){
            curl_setopt_array($ch, $options);
        }
        $data=curl_exec($ch);
        curl_close($ch);
        return $data;
    }

function curl_get($url=‘‘,$options=array()){
        $ch=curl_init($url);
        curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
        curl_setopt($ch,CURLOPT_TIMEOUT,5);
        if(!empty($options)){
            curl_setopt_array($ch,$options);
        }
        $data=curl_exec($ch);
        curl_close($ch);
        return $data;
    }