blocks|key|3239973|text|查看您的php.ini文件并检查fileinfo.so或php_fileinfo.dll是否已激活(取决于您的平台和版本)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3239974|应该有一行类似于|3239975|extension=fileinfo.so|code-block|syntax|javascript|3239976|在php.ini文件中|3239977|entityMap^0|G|B|S|G|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

Have a look at your php.ini file and check that the <code>fileinfo.so</code>or <code>php_fileinfo.dll</code> is activated (depending on your platform and version).

There should be a line similar to

<pre><code>extension=fileinfo.so
</code></pre>

in your php.ini file

blocks|key|3025784|text|如果您使用XAMPP，则需要在php.ini中启用extension=php_fileinfo.dll|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3025785|entityMap^0|P|Q|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

If you using XAMPP, you enable <code>extension=php_fileinfo.dll</code> in php.ini

blocks|key|301550|text|你有什么版本的PHP？PHP5.3.0及更高版本内置了Fileinfo，但在Windows上你必须在php.ini中手动启用它。你可以在in+the+documentation上找到更多信息。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|301551|entityMap|0|LINK|mutability|MUTABLE|url|http://us2.php.net/manual/en/fileinfo.installation.php^0|1E|7|1W|K|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

What version of PHP do you have? PHP 5.3.0 and later have Fileinfo built in, but on Windows you must enable it manually in your <code>php.ini</code>. You can find further information <a href="http://us2.php.net/manual/en/fileinfo.installation.php" rel="noreferrer">in the documentation</a>.

blocks|key|296272|text|如果你使用的是WAMP，那么转到PHP+extensions，启用PHP_fileinfo，然后重启所有服务器。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|296273|entityMap^0|X|C|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

If you are using WAMP then Go to PHP extensions and enbale PHP_fileinfo and restart all serverices.

blocks|key|3240049|text|Windows用户:只需编辑php.ini并取消对此行的注释：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3240050|extension=php_fileinfo.dll|code-block|syntax|javascript|3240051|即将前面的分号从|3240052|;extension=php_fileinfo.dll|3240053|记得重启Apache以使新的php.ini生效。|3240054|entityMap^0|E|7|0|0|0|0|E|7|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|R|$]]

Windows users: just edit php.ini and uncomment this line:

<pre><code>extension=php_fileinfo.dll
</code></pre>

I.e. remove the preceding semicolon from 

<pre><code>;extension=php_fileinfo.dll
</code></pre>

Remember to restart Apache for new php.ini to take effect.

blocks|key|299237|text|对于那些已经正常工作的用户，但随后出现以下错误：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|299238|一些主机提供商(例如，Dreamhost)允许客户覆盖配置文件中的默认PHP设置，通常使用如下路径：|299239|~/.php/5.4/phprc|offset|length|style|CODE|299240|如果您升级PHP+(或者它是代表您升级的)，那么路径中的版本号可能是一个问题。以前版本中的任何自定义设置，包括启用fileinfo扩展名的设置，在新版本中都将丢失。通常，您只需将配置文件复制到适当的新配置目录，然后重新启动服务器即可。|299241|entityMap^0|0|0|0|G|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@$F|Q|G|R|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|M|$]]

For those have had it working fine, but then this error appears: 

Some hosting providers (e.g., Dreamhost) allow customers to override default PHP settings in a configuration file, often with a path something like: 

<code>~/.php/5.4/phprc</code>

That version number in the path can be a problem if you upgrade PHP (or it is upgraded on your behalf). Any custom settings from the prior version, including one enabling the fileinfo extension, will be missing in the newer version. Usually you can just copy the config file to the appropriate new config directory and restart the server.

blocks|key|3240069|text|我在使用PHP.时也遇到了同样的问题。我执行了以下步骤：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3240070|+-+make+sure+that+the+fileinfo+extension+is+already+installed+if+you+are+using+<+PHP+5.3.0.

+-+Then+you+have+to+add+in+php.ini+;extension=fileinfo.so+or
+++;extension=php_fileinfo.dll

+-++If+you+want+to+uncomment+remove+the+semicolon(;)
+++extension=fileinfo.so+or+extension=php_fileinfo.dll|code-block|syntax|javascript|3240071|然后保存并重新启动您的web服务器。|3240072|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I had this same issue with PHP.I did the following steps:

<pre><code> - make sure that the fileinfo extension is already installed if you are using &lt; PHP 5.3.0.

 - Then you have to add in php.ini ;extension=fileinfo.so or
 ;extension=php_fileinfo.dll

 - If you want to uncomment remove the semicolon(;)
 extension=fileinfo.so or extension=php_fileinfo.dll
</code></pre>

Then save and restart your web server.

blocks|key|299264|text|对于PHP+7.3或更高版本|type|unstyled|depth|inlineStyleRanges|entityRanges|data|299265|变化|299266|;extension=fileinfo|code-block|syntax|javascript|299267|至|299268|extension=fileinfo|299269|在php.ini文件中。|299270|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

For PHP 7.3 or Higher
Change
<pre><code>;extension=fileinfo
</code></pre>
To
<pre><code>extension=fileinfo
</code></pre>
in php.ini file.

Whenever I try to get the mime content type from php, it echos:

<blockquote>
 Fatal error: Class 'finfo' not found in /home/jobynadel/finadel.com/video/finfo.php on line 4
</blockquote>

or

<blockquote>
 Fatal error: Call to undefined function finfo_open in /home/jobynadel/finadel.com/video/finfo.php on line 4
</blockquote>

I just can't figure it out!

The code I am using is:

<pre><code>$file_info = new finfo(FILEINFO_MIME_TYPE);
// See constant value http://php.net/manual/en/fileinfo.constants.php#113687 
$mime_type = $file_info-&gt;buffer(file_get_contents($file));
</code></pre>

PHP fileinfo is undefined function

服务器

Windows

每当我尝试从php获取mime内容类型时，它都会回显： 致命错误:在/home/jobynadel/finadel.com/video/finfo.php的4行上找不到类'finfo‘或 致命错误:在行4上对/home/jobynadel/finadel.com/video/finfo.php中未定义的函数finfo_open进行调用我就是想不通！我使用的代码是：$file_info = new 

问PHP fileinfo是未定义的函数
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回答 8

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问PHP fileinfo是未定义的函数EN

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问PHP fileinfo是未定义的函数
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