php使用curl扩展发送get和post请求示例

<?php
final class HttpClient {

    const TIME_OUT = 30; // 请求请求超时的时间

    static function get($url) {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_TIMEOUT, self::TIME_OUT); 
        $resp = curl_exec($ch);
        if (curl_errno($ch)) {
            return curl_error($ch);
        }
        curl_close($ch);
        return $resp;
    }

    static function post($url, $params) {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_TIMEOUT, self::TIME_OUT);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($params));
        $resp = curl_exec($ch);
        if (curl_errno($ch)) {
            return curl_error($ch);
        }
        curl_close($ch);
        return $resp;
    }
}