PHP phpThumb_functions::ImageTypeToMIMEtype示例

function RedirectToCachedFile()
{
    global $phpThumb, $PHPTHUMB_CONFIG;
    $nice_cachefile = str_replace(DIRECTORY_SEPARATOR, '/', $phpThumb->cache_filename);
    $nice_docroot = str_replace(DIRECTORY_SEPARATOR, '/', rtrim($PHPTHUMB_CONFIG['document_root'], '/\\'));
    $parsed_url = phpThumb_functions::ParseURLbetter(@$_SERVER['HTTP_REFERER']);
    $nModified = filemtime($phpThumb->cache_filename);
    if ($phpThumb->config_nooffsitelink_enabled && @$_SERVER['HTTP_REFERER'] && !in_array(@$parsed_url['host'], $phpThumb->config_nooffsitelink_valid_domains)) {
        $phpThumb->DebugMessage('Would have used cached (image/' . $phpThumb->thumbnailFormat . ') file "' . $phpThumb->cache_filename . '" (Last-Modified: ' . gmdate('D, d M Y H:i:s', $nModified) . ' GMT), but skipping because $_SERVER[HTTP_REFERER] (' . @$_SERVER['HTTP_REFERER'] . ') is not in $phpThumb->config_nooffsitelink_valid_domains (' . implode(';', $phpThumb->config_nooffsitelink_valid_domains) . ')', __FILE__, __LINE__);
    } elseif ($phpThumb->phpThumbDebug) {
        $phpThumb->DebugTimingMessage('skipped using cached image', __FILE__, __LINE__);
        $phpThumb->DebugMessage('Would have used cached file, but skipping due to phpThumbDebug', __FILE__, __LINE__);
        $phpThumb->DebugMessage('* Would have sent headers (1): Last-Modified: ' . gmdate('D, d M Y H:i:s', $nModified) . ' GMT', __FILE__, __LINE__);
        if ($getimagesize = @GetImageSize($phpThumb->cache_filename)) {
            $phpThumb->DebugMessage('* Would have sent headers (2): Content-Type: ' . phpThumb_functions::ImageTypeToMIMEtype($getimagesize[2]), __FILE__, __LINE__);
        }
        if (preg_match('#^' . preg_quote($nice_docroot) . '(.*)$#', $nice_cachefile, $matches)) {
            $phpThumb->DebugMessage('* Would have sent headers (3): Location: ' . dirname($matches[1]) . '/' . urlencode(basename($matches[1])), __FILE__, __LINE__);
        } else {
            $phpThumb->DebugMessage('* Would have sent data: readfile(' . $phpThumb->cache_filename . ')', __FILE__, __LINE__);
        }
    } else {
        if (headers_sent()) {
            $phpThumb->ErrorImage('Headers already sent (' . basename(__FILE__) . ' line ' . __LINE__ . ')');
            exit;
        }
        SendSaveAsFileHeaderIfNeeded();
        header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $nModified) . ' GMT');
        if (@$_SERVER['HTTP_IF_MODIFIED_SINCE'] && $nModified == strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) && @$_SERVER['SERVER_PROTOCOL']) {
            header($_SERVER['SERVER_PROTOCOL'] . ' 304 Not Modified');
            exit;
        }
        if ($getimagesize = @GetImageSize($phpThumb->cache_filename)) {
            header('Content-Type: ' . phpThumb_functions::ImageTypeToMIMEtype($getimagesize[2]));
        } elseif (preg_match('#\\.ico$#i', $phpThumb->cache_filename)) {
            header('Content-Type: image/x-icon');
        }
        if (!@$PHPTHUMB_CONFIG['cache_force_passthru'] && preg_match('#^' . preg_quote($nice_docroot) . '(.*)$#', $nice_cachefile, $matches)) {
            header('Location: ' . dirname($matches[1]) . '/' . urlencode(basename($matches[1])));
        } else {
            @readfile($phpThumb->cache_filename);
        }
        exit;
    }
    return true;
}