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    <h2> Advice </h2> <p>I really think you are getting things wrong here ...</p> <p>A. when a file is uploaded it also returns <code>mime type</code> automatically in the <code>$_FILES</code> </p> <pre><code>echo $_FILES['file']['type'][$i] ; </code></pre> <p>B if you want to get mime for a file that was not uploaded, or try and make a better determination that what the client headers provided, use <code>mime_content_type</code> <a href="http://php.net/manual/en/function.mime-content-type.php" rel="nofollow noreferrer">http://php.net/manual/en/function.mime-content-type.php</a></p> <pre><code>echo mime_content_type($fileName); </code></pre> <p>C. Depreciation </p> <p><s>Both <code>mime_content_type</code> &amp; <code>Fileinfo</code> are not properly maintained and they have been depreciated.</s></p> <p><strong>Update:</strong> It once was incorrectly marked as deprecated in the manual, but it has been fixed <a href="https://bugs.php.net/bug.php?id=71367" rel="nofollow noreferrer">https://bugs.php.net/bug.php?id=71367</a> on the 14th of January 2016. As can see supports 7.0 so not discontinued at all.</p> <p>Alternatively can suggest you look at the following links for replacement </p> <p><a href="https://stackoverflow.com/questions/10363199/getting-mime-type-of-zipped-files/10363354#10363354">Getting mime type of zipped files</a></p> <p><a href="http://www.php.net/manual/en/function.mime-content-type.php#87856" rel="nofollow noreferrer">http://www.php.net/manual/en/function.mime-content-type.php#87856</a></p> <p>D. You can also use <code>getID3</code> <a href="http://sourceforge.net/projects/getid3/files/getID3%28%29%201.x/1.9.3/" rel="nofollow noreferrer">http://sourceforge.net/projects/getid3/files/getID3%28%29%201.x/1.9.3/</a> which can check the real mime type for some common files ... </p> <p>E. Using Linux Command line probably saver </p> <pre><code>$mime = shell_exec("file -bi " . escapeshellarg($file)); </code></pre> <p>Or on Mac</p> <pre><code>$mime = shell_exec("file -b --mime ".escapeshellarg($file)); </code></pre> <h2> Finally </h2> <p>Why do you want to work on <code>$_FILES['file']['tmp_name'][$i]</code> directly ?? This has been know to give so many issues </p> <p>try</p> <pre><code>$tempDir = ""; // Temp foreach ( $_FILES ["file"] ["error"] as $key =&gt; $error ) { if ($error == UPLOAD_ERR_OK) { $tmp_name = $_FILES ["file"] ["tmp_name"] [$key]; $name = $_FILES ["file"] ["name"] [$key]; $tempFile = "$tempDir/$name"; move_uploaded_file ( $tmp_name, $tempFile ); echo $user-&gt;get_mime ( $tempFile ); unlink ( $tempFile ); } } </code></pre>
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    1. COHello, thank you for your comment. I understand completely where you are coming from, and I have now understood where I am going wrong anyway, I am currently coding a uploader that will allow me to define what extensions and filetypes are allowed, I know that $_FILES will return the MIMETYPE, but it is very easily fooled(i.e saving print "Hello World" into a jpeg with php tags, it will return "image/jpeg". I am coding a secure uploader, and I would like to chose what files are uploaded, however I guess it will be creating a platform that allows all filetypes, as it seems near-impossible to
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    2. COget the correct & true MIMETYPE of any given file in the $_FILES array. Thank you for your comment
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    3. COdo you mind using Linux file system using simple `exec`
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