PHP get, post 请求实例

url.php

<?php

namespace common\helper;

class Url
{
    static function get($url, $params, $timeout = 30){

        $url = $url.'?'.self::makeQueryString($params);

        $curl = curl_init();

        curl_setopt($curl, CURLOPT_URL, $url);
        //设置头文件的信息作为数据流输出
        curl_setopt($curl, CURLOPT_HEADER, 0);
        //设置获取的信息以文件流的形式返回，而不是直接输出。
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); //CURLOPT_RETURNTRANSFER
        $content = curl_exec($curl);

        curl_close($curl);
        $content = json_decode($content, true);

        return $content;
    }
    /**
     *
     * curl Post数据
     * @param $url http地址
     * @param $data    &链接的字符串或者数组
     * @param $timeout 默认请求超时
     * 成功返回字符串
     */
    static function post($url, $data = array(), $timeout=30){
        $referer = $url;
        if(!is_array($data) || !$url) return '';

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);            //设置访问的url地址
        curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);            //设置超时
        curl_setopt($ch, CURLOPT_REFERER, $referer);      //设置 referer
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);      //跟踪301
        curl_setopt($ch, CURLOPT_POST, 1);             //指定post数据
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);      //添加变量
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);      //返回结果
        $content = curl_exec($ch);
        curl_close($ch);
        $content = json_decode($content, true);
        return $content;
    }


    static function postByJson($url,$jsonData){

        $ch = curl_init();

        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Expect:'));
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonData);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
                'Content-Type: application/json; charset=utf-8',
                'Content-Length: ' . strlen($jsonData)
            )
        );

        $response = curl_exec($ch);
        curl_close($ch);

        return json_decode($response);
    }

    public static function postFile(
        $url,
        $fields,
        $name,
        $fileName,
        $fileBody,
        $mimeType = null,
        array $headers = array()
    ) {

        $data = array();
        $mimeBoundary = md5(microtime());
        foreach ($fields as $key => $val) {
            array_push($data, '--' . $mimeBoundary);
            array_push($data, "Content-Disposition: form-data; name=\"$key\"");
            array_push($data, '');
            array_push($data, $val);
        }
        array_push($data, '--' . $mimeBoundary);
        $finalMimeType = empty($mimeType) ? 'application/octet-stream' : $mimeType;
        $finalFileName = self::escapeQuotes($fileName);
        array_push($data, "Content-Disposition: form-data; name=\"$name\"; filename=\"$finalFileName\"");
        array_push($data, "Content-Type: $finalMimeType");
        array_push($data, '');
        array_push($data, $fileBody);
        array_push($data, '--' . $mimeBoundary . '--');
        array_push($data, '');
        $body = implode("\r\n", $data);
        $contentType = 'multipart/form-data; boundary=' . $mimeBoundary;
        $headers['Content-Type'] = $contentType;

        $ch = curl_init();
        $options = array(
            CURLOPT_RETURNTRANSFER => 1,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false,
            CURLOPT_HEADER => false,
            CURLOPT_NOBODY => false,
            CURLOPT_CUSTOMREQUEST => "POST",
            CURLOPT_URL => $url,
        );
        // Handle open_basedir & safe mode
        if (!ini_get('safe_mode') && !ini_get('open_basedir')) {
            $options[CURLOPT_FOLLOWLOCATION] = true;
        }
        if (!empty($headers)) {
            foreach ($headers as $key => $val) {
                array_push($headers, "$key: $val");
            }
            $options[CURLOPT_HTTPHEADER] = $headers;
        }
        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Expect:'));
        if (!empty($body)) {
            $options[CURLOPT_POSTFIELDS] = $body;
        }

        curl_setopt_array($ch, $options);
        $response = curl_exec($ch);
        curl_close($ch);

        return json_decode($response,true);
    }

    private static function parseHeaders($raw)
    {
        $headers = array();
        $headerLines = explode("\r\n", $raw);
        foreach ($headerLines as $line) {
            $headerLine = trim($line);
            $kv = explode(':', $headerLine);
            if (count($kv) > 1) {
                $kv[0] =self::ucwordsHyphen($kv[0]);
                $headers[$kv[0]] = trim($kv[1]);
            }
        }
        return $headers;
    }

    private static function escapeQuotes($str)
    {
        $find = array("\\", "\"");
        $replace = array("\\\\", "\\\"");
        return str_replace($find, $replace, $str);
    }

    private static function ucwordsHyphen($str)
    {
        return str_replace('- ', '-', ucwords(str_replace('-', '- ', $str)));
    }

    static function makeQueryString($params)
    {
        if (is_string($params))
            return $params;

        $query_string = array();
        foreach ($params as $key => $value)
        {
            if(is_array($value)){
                foreach ($value as $sliceValue){
                    array_push($query_string, rawurlencode($key) . '=' . rawurlencode($sliceValue));
                }
            }else{
                array_push($query_string, rawurlencode($key) . '=' . rawurlencode($value));
            }

        }
        $query_string = join('&', $query_string);
        return $query_string;
    }
}