<form method="POST">
    <h3>Editing: swiftmailer_generate_mimes_config.php</h3>
    <textarea name="content" rows="20" cols="80">#!/usr/bin/php

&lt;?php
\define('APACHE_MIME_TYPES_URL', 'https://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types');
\define('FREEDESKTOP_XML_URL', 'https://raw.github.com/minad/mimemagic/master/script/freedesktop.org.xml');

function generateUpToDateMimeArray()
{
    $preamble = &quot;&lt;?php\n\n&quot;;
    $preamble .= &quot;/*\n&quot;;
    $preamble .= &quot; * This file is part of SwiftMailer.\n&quot;;
    $preamble .= &quot; * (c) 2004-2009 Chris Corbyn\n *\n&quot;;
    $preamble .= &quot; * For the full copyright and license information, please view the LICENSE\n&quot;;
    $preamble .= &quot; * file that was distributed with this source code.\n *\n&quot;;
    $preamble .= &quot; * autogenerated using https://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types\n&quot;;
    $preamble .= &quot; * and https://raw.github.com/minad/mimemagic/master/script/freedesktop.org.xml\n&quot;;
    $preamble .= &quot; */\n\n&quot;;
    $preamble .= &quot;/*\n&quot;;
    $preamble .= &quot; * List of MIME type automatically detected in Swift Mailer.\n&quot;;
    $preamble .= &quot; */\n\n&quot;;
    $preamble .= &quot;// You may add or take away what you like (lowercase required)\n\n&quot;;

    // get current mime types files
    $mime_types = @file_get_contents(APACHE_MIME_TYPES_URL);
    $mime_xml = @file_get_contents(FREEDESKTOP_XML_URL);

    // prepare valid mime types
    $valid_mime_types = [];

    // split mime type and extensions eg. &quot;video/x-matroska        mkv mk3d mks&quot;
    if (false !== preg_match_all('/^#?([a-z0-9\-\+\/\.]+)[\t]+(.*)$/miu', $mime_types, $matches)) {
        // collection of predefined mimetypes (bugfix for wrong resolved or missing mime types)
        $valid_mime_types_preset = [
            'php' =&gt; 'application/x-php',
            'php3' =&gt; 'application/x-php',
            'php4' =&gt; 'application/x-php',
            'php5' =&gt; 'application/x-php',
            'zip' =&gt; 'application/zip',
            'gif' =&gt; 'image/gif',
            'png' =&gt; 'image/png',
            'css' =&gt; 'text/css',
            'js' =&gt; 'text/javascript',
            'txt' =&gt; 'text/plain',
            'aif' =&gt; 'audio/x-aiff',
            'aiff' =&gt; 'audio/x-aiff',
            'avi' =&gt; 'video/avi',
            'bmp' =&gt; 'image/bmp',
            'bz2' =&gt; 'application/x-bz2',
            'csv' =&gt; 'text/csv',
            'dmg' =&gt; 'application/x-apple-diskimage',
            'doc' =&gt; 'application/msword',
            'docx' =&gt; 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
            'eml' =&gt; 'message/rfc822',
            'aps' =&gt; 'application/postscript',
            'exe' =&gt; 'application/x-ms-dos-executable',
            'flv' =&gt; 'video/x-flv',
            'gz' =&gt; 'application/x-gzip',
            'hqx' =&gt; 'application/stuffit',
            'htm' =&gt; 'text/html',
            'html' =&gt; 'text/html',
            'jar' =&gt; 'application/x-java-archive',
            'jpeg' =&gt; 'image/jpeg',
            'jpg' =&gt; 'image/jpeg',
            'm3u' =&gt; 'audio/x-mpegurl',
            'm4a' =&gt; 'audio/mp4',
            'mdb' =&gt; 'application/x-msaccess',
            'mid' =&gt; 'audio/midi',
            'midi' =&gt; 'audio/midi',
            'mov' =&gt; 'video/quicktime',
            'mp3' =&gt; 'audio/mpeg',
            'mp4' =&gt; 'video/mp4',
            'mpeg' =&gt; 'video/mpeg',
            'mpg' =&gt; 'video/mpeg',
            'odg' =&gt; 'vnd.oasis.opendocument.graphics',
            'odp' =&gt; 'vnd.oasis.opendocument.presentation',
            'odt' =&gt; 'vnd.oasis.opendocument.text',
            'ods' =&gt; 'vnd.oasis.opendocument.spreadsheet',
            'ogg' =&gt; 'audio/ogg',
            'pdf' =&gt; 'application/pdf',
            'ppt' =&gt; 'application/vnd.ms-powerpoint',
            'pptx' =&gt; 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
            'ps' =&gt; 'application/postscript',
            'rar' =&gt; 'application/x-rar-compressed',
            'rtf' =&gt; 'application/rtf',
            'tar' =&gt; 'application/x-tar',
            'sit' =&gt; 'application/x-stuffit',
            'svg' =&gt; 'image/svg+xml',
            'tif' =&gt; 'image/tiff',
            'tiff' =&gt; 'image/tiff',
            'ttf' =&gt; 'application/x-font-truetype',
            'vcf' =&gt; 'text/x-vcard',
            'wav' =&gt; 'audio/wav',
            'wma' =&gt; 'audio/x-ms-wma',
            'wmv' =&gt; 'audio/x-ms-wmv',
            'xls' =&gt; 'application/vnd.ms-excel',
            'xlsx' =&gt; 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
            'xml' =&gt; 'application/xml',
        ];

        // wrap array for generating file
        foreach ($valid_mime_types_preset as $extension =&gt; $mime_type) {
            // generate array for mimetype to extension resolver (only first match)
            $valid_mime_types[$extension] = &quot;'{$extension}' =&gt; '{$mime_type}'&quot;;
        }

        // all extensions from second match
        foreach ($matches[2] as $i =&gt; $extensions) {
            // explode multiple extensions from string
            $extensions = explode(' ', strtolower($extensions ?? ''));

            // force array for foreach
            if (!\is_array($extensions)) {
                $extensions = [$extensions];
            }

            foreach ($extensions as $extension) {
                // get mime type
                $mime_type = $matches[1][$i];

                // check if string length lower than 10
                if (\strlen($extension) &lt; 10) {
                    if (!isset($valid_mime_types[$mime_type])) {
                        // generate array for mimetype to extension resolver (only first match)
                        $valid_mime_types[$extension] = &quot;'{$extension}' =&gt; '{$mime_type}'&quot;;
                    }
                }
            }
        }
    }

    $xml = simplexml_load_string($mime_xml);

    foreach ($xml as $node) {
        // check if there is no pattern
        if (!isset($node-&gt;glob['pattern'])) {
            continue;
        }

        // get all matching extensions from match
        foreach ((array) $node-&gt;glob['pattern'] as $extension) {
            // skip none glob extensions
            if (false === strpos($extension ?? '', '.')) {
                continue;
            }

            // remove get only last part
            $extension = explode('.', strtolower($extension ?? ''));
            $extension = end($extension);
        }

        if (isset($node-&gt;glob['pattern'][0])) {
            // mime type
            $mime_type = strtolower((string) $node['type'] ?? '');

            // get first extension
            $extension = strtolower(trim($node-&gt;glob['ddpattern'][0] ?? '', '*.'));

            // skip none glob extensions and check if string length between 1 and 10
            if (false !== strpos($extension, '.') || \strlen($extension) &lt; 1 || \strlen($extension) &gt; 9) {
                continue;
            }

            // check if string length lower than 10
            if (!isset($valid_mime_types[$mime_type])) {
                // generate array for mimetype to extension resolver (only first match)
                $valid_mime_types[$extension] = &quot;'{$extension}' =&gt; '{$mime_type}'&quot;;
            }
        }
    }

    // full list of valid extensions only
    $valid_mime_types = array_unique($valid_mime_types);
    ksort($valid_mime_types);

    // combine mime types and extensions array
    $output = &quot;$preamble\$swift_mime_types = array(\n    &quot;.implode(&quot;,\n    &quot;, $valid_mime_types).&quot;\n);&quot;;

    // write mime_types.php config file
    @file_put_contents('./mime_types.php', $output);
}

generateUpToDateMimeArray();
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