使用 PHP 中的 URL 获取远程文件大小
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Get remote file size using URL in PHP
提问by Manish Chauhan
I am trying to get image size using
我正在尝试使用
get_headers($url)
But I am getting warning like
但我收到警告
get_headers() [function.get-headers]: http:// wrapper is disabled in the server configuration by allow_url_fopen=0 in
Is there any other way to Do so?
有没有其他方法可以这样做？
Thanks.
谢谢。
回答by Manigandan Arjunan
You can use curl_getinfo()function to get the remote file size.
您可以使用curl_getinfo()函数来获取远程文件大小。
$ch = curl_init('http://www.google.co.in/images/srpr/logo4w.png');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_HEADER, TRUE);
curl_setopt($ch, CURLOPT_NOBODY, TRUE);
$data = curl_exec($ch);
$size = curl_getinfo($ch, CURLINFO_CONTENT_LENGTH_DOWNLOAD);
curl_close($ch);
echo $size;
回答by Webberig
You must perform a HEAD request. This will tell the server that you're only interested in the HTTP headers.
您必须执行 HEAD 请求。这将告诉服务器您只对 HTTP 标头感兴趣。
stream_context_set_default(
array(
'http' => array(
'method' => 'HEAD'
)
)
);
$headers = get_headers('http://example.com');
This will return an array of headers. You must find the content-length item which has the file size (number of bytes).
这将返回一个标题数组。您必须找到具有文件大小（字节数）的内容长度项。
