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。
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