使用 cURL 和 php 获取 mime 类型的外部文件
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Get mime type of external file using cURL and php
提问by Ryan
I've used mime_content_type()and File info but i never successed. i want to use now cURL with PHP and get the headers of the file which is hosted on another domain then extract & determine if the type is MP3 or not. ( i think the mime type of MP3 is audio/mpeg)
我使用过mime_content_type()和文件信息，但我从未成功过。我现在想在 PHP 中使用 cURL 并获取托管在另一个域上的文件的标题，然后提取并确定类型是否为 MP3。（我认为 MP3 的 mime 类型是audio/mpeg）
Briefly, i know that but i don't know how to apply it :)
简而言之，我知道，但我不知道如何应用它:)
Thanks
谢谢
回答by ma?ek
PHP curl_getinfo()
PHP curl_getinfo()
<?php
# the request
$ch = curl_init('http://www.google.com');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_exec($ch);
# get the content type
echo curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
# output
text/html; charset=ISO-8859-1
?>
curl
卷曲
curl -I http://www.google.com
curl -I http://www.google.com
output
输出
HTTP/1.1 301 Moved Permanently
Location: http://www.google.com/
Content-Type: text/html; charset=UTF-8
Date: Fri, 09 Apr 2010 20:35:12 GMT
Expires: Sun, 09 May 2010 20:35:12 GMT
Cache-Control: public, max-age=2592000
Server: gws
Content-Length: 219
回答by Mark
You can use a HEAD request via curl. Like:
您可以通过 curl 使用 HEAD 请求。喜欢：
$ch = curl_init();
$url = 'http://sstatic.net/so/img/logo.png';
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$results = explode("\n", trim(curl_exec($ch)));
foreach($results as $line) {
if (strtolower(strtok($line, ':')) == 'content-type') {
$parts = explode(":", $line);
echo trim($parts[1]);
}
}
Which returns: image/png
返回：图像/png
回答by Danila Vershinin
If you are ok with a more elegant Zend Framework version, here is a classwhich makes use of Zend_Http_Client component.
如果您对更优雅的 Zend Framework 版本没有意见，这里有一个使用 Zend_Http_Client 组件的类。
Use it like so:
像这样使用它：
$sniffer = new Smartycode_Http_Mime();
$contentType = $sniffer->getMime($url);
