七牛支持抓取远程图片 API，用 access_key + secret_key + url 生成 access_token, 把 access_token 加在 header 里，然后向 post url 就完成上传了。

Sample code:

<?php

/*

*

* @desc URL安全形式的base64编码

* @param string $str

* @return string

*/

function urlsafe_base64_encode($str){

$find = array("+","/");

$replace = array("-", "_");

return str_replace($find, $replace, base64_encode($str));

}

/**

* generate_access_token

*

* @desc 签名运算

* @param string $access_key

* @param string $secret_key

* @param string $url

* @param array $params

* @return string

*/

function generate_access_token($access_key, $secret_key, $url, $params = ''){

$parsed_url = parse_url($url);

$path = $parsed_url['path'];

$access = $path;

if (isset($parsed_url['query'])) {

$access .= "?" . $parsed_url['query'];

}

$access .= "n";

if($params){

if (is_array($params)){

$params = http_build_query($params);

}

$access .= $params;

}

$digest = hash_hmac('sha1', $access, $secret_key, true);

return $access_key.':'.urlsafe_base64_encode($digest);

}

/**

* 测试

*/

$access_key = '''your access_key';

$secret_key = 'your secret_key';

$fetch = urlsafe_base64_encode('http://203.208.46.200/images/srpr/logo11w.png');

$to = urlsafe_base64_encode('ibeircn:11.jpg');

$url = 'http://iovip.qbox.me/fetch/'. $fetch .'/to/' . $to;

$access_token = generate_access_token($access_key, $secret_key, $url);

$header[] = 'Content-Type: application/json';

$header[] = 'Authorization: QBox '. $access_token;

$con = send('iovip.qbox.me/fetch/'.$fetch.'/to/'.$to, $header);

var_dump($con);

function send($url, $header = '') {

$curl = curl_init($url);

curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($curl, CURLOPT_HEADER,1);

curl_setopt($curl, CURLOPT_HTTPHEADER, $header);

curl_setopt($curl, CURLOPT_POST, 1);

$con = curl_exec($curl);

if ($con === false) {

echo 'CURL ERROR: ' . curl_error($curl);

} else {

return $con;

}

}

?>

以上所述就是本文的全部内容了，希望大家能够喜欢。