PHP-通过URL获取文件类型 [英] PHP- Get file type by URL

问题描述

我想使用PHP通过URL获取文件类型(例如，图像/gif).

I want to get the file type (eg. image/gif) by URL using PHP.I had tried

<?php
$image_path="http://fc04.deviantart.net/fs71/f/2010/227/4/6/PNG_Test_by_Destron23.png";
exif_imagetype($image_path);
?>

上面的代码给我空白页，下面的代码返回"3":

The above code gave me a blank page and the following code returned "3":

<?php
$image_path="http://fc04.deviantart.net/fs71/f/2010/227/4/6/PNG_Test_by_Destron23.png";
echo exif_imagetype($image_path);
?>

我要去哪里错了? 解决:使用Fileinfo获取内容类型

Where am I going wrong? Solved: using Fileinfo to fetch content type

推荐答案

<?php
 $image_path="http://fc04.deviantart.net/fs71/f/2010/227/4/6/PNG_Test_by_Destron23.png";
 echo exif_imagetype($image_path);
?>

返回3是因为png响应类型如maciej所说.

It returned 3 because png response type as maciej said.

尝试此操作以获得这样的image/png:

Try this to get like this image/png:

echo mime_content_type($image_path);

尝试一下:

$finfo = finfo_open(FILEINFO_MIME_TYPE); // return mime type ala mimetype extension   
echo finfo_file($finfo, $image_path) . "\n";
finfo_close($finfo);

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