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:
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<?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;
}
}
?>
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以上所述就是本文的全部内容了，希望大家能够喜欢。