CODE EXAMPLE FOR PHP

how to get correct file or content mime type using/in php

function get_content_mime_type($content)
{
  $url = 'http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types';
  $url_live = false;
  $handle = curl_init($url);
  curl_setopt_array($handle, array(
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_NOBODY => true,
    CURLOPT_HEADER => false,
    CURLOPT_RETURNTRANSFER => false,
    CURLOPT_SSL_VERIFYHOST => false,
    CURLOPT_SSL_VERIFYPEER => false
  ));
  $response = curl_exec($handle);
  $httpCode = curl_getinfo($handle, CURLINFO_EFFECTIVE_URL);
  $httpCode = curl_getinfo($handle, CURLINFO_HTTP_CODE);
  if ($httpCode == 200)
  {
    $url_live = true;
  }
  $url_live = $url_live;
  curl_close($handle);
  $mimes = array();
  if ($url_live)
  {
    $mimes_file = file_get_contents($url);
    preg_match_all('#^([^s]{2,}?)s+(.+?)$#ism', $mimes_file, $matches, PREG_SET_ORDER);
    foreach ($matches as $match)
    {
      $exts = explode(" ", $match[2]);
      foreach ($exts as $ext)
      {
        $mimes[$ext] = $match[1];
      }
    }
  }
  else
  {
    $mimes = array(
      'txt' => 'text/plain',
      'htm' => 'text/html',
      'html' => 'text/html',
      'php' => 'text/html',
      'css' => 'text/css',
      'js' => 'application/javascript',
      'json' => 'application/json',
      'xml' => 'application/xml',
      'swf' => 'application/x-shockwave-flash',
      'flv' => 'video/x-flv',
      // images
      'png' => 'image/png',
      'jpe' => 'image/jpeg',
      'jpeg' => 'image/jpeg',
      'jpg' => 'image/jpeg',
      'gif' => 'image/gif',
      'bmp' => 'image/bmp',
      'ico' => 'image/vnd.microsoft.icon',
      'tiff' => 'image/tiff',
      'tif' => 'image/tiff',
      'svg' => 'image/svg+xml',
      'svgz' => 'image/svg+xml',
      // archives
      'zip' => 'application/zip',
      'rar' => 'application/x-rar-compressed',
      'exe' => 'application/x-msdownload',
      'msi' => 'application/x-msdownload',
      'cab' => 'application/vnd.ms-cab-compressed',
      // audio/video
      'mp3' => 'audio/mpeg',
      'qt' => 'video/quicktime',
      'mov' => 'video/quicktime',
      // adobe
      'pdf' => 'application/pdf',
      'psd' => 'image/vnd.adobe.photoshop',
      'ai' => 'application/postscript',
      'eps' => 'application/postscript',
      'ps' => 'application/postscript',
      // ms office
      'doc' => 'application/msword',
      'rtf' => 'application/rtf',
      'xls' => 'application/vnd.ms-excel',
      'ppt' => 'application/vnd.ms-powerpoint',
      'docx' => 'application/msword',
      'xlsx' => 'application/vnd.ms-excel',
      'pptx' => 'application/vnd.ms-powerpoint',
      // open office
      'odt' => 'application/vnd.oasis.opendocument.text',
      'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
    );
  }
  $content_mime = 'unknown';
  if (is_file($content))
  {
    if (isset(pathinfo($content) ['extension']))
    {
      $content_ext = pathinfo($content) ['extension'];
      if (isset($mimes[$content_ext]))
      {
        $content_mime = $mimes[$content_ext];
      }
      else
      {
        if (is_readable($content) && is_executable($content))
        {
          $finfo = finfo_open(FILEINFO_MIME_TYPE);
          $content_mime = finfo_file($finfo, $content);
          if ($content_mime === null | $content_mime === "")
          {
            $content_mime = "application/octet-stream";
          }
          else
          {
            $content_mime = $content_mime;
          }
          finfo_close($finfo);
        }
        else
        {
          $content_mime = "application/octet-stream";
        }
      }
    }
  }
  else
  {
    // return whatever you want
    // $content_mime = 'unknown';

  }
  $content_mime = $content_mime;
  return $content_mime;
}