function install_msie_buffer_fix()
{
if (browser_check(BROWSER_MSIE)) {
echo str_repeat("<!-- bh_install_buffer //-->\n", 20);
}
}
function html_frame($src, $name, $frameborder = 0, $scrolling = '', $noresize = '')
{
$this->src = $src;
$this->name = $name;
if (in_array($scrolling, array('yes', 'no', ''))) {
$this->scrolling = $scrolling;
}
if (in_array($noresize, array('noresize', ''))) {
$this->noresize = $noresize;
}
if (browser_check(BROWSER_WEBKIT)) {
$this->frameborder = 1;
} else {
$this->frameborder = is_numeric($frameborder) ? $frameborder : 0;
}
if (browser_check(BROWSER_MSIE)) {
$this->allowtransparency = "allowtransparency=\"true\" ";
}
}
function cache_check_etag($local_etag)
{
if (browser_check(BROWSER_AOL)) {
return false;
}
if (headers_sent()) {
return false;
}
$local_last_modified = gmdate("D, d M Y H:i:s", time()) . "GMT";
if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && strlen(trim($_SERVER['HTTP_IF_NONE_MATCH'])) > 0) {
$remote_etag = mb_substr($_SERVER['HTTP_IF_NONE_MATCH'], 1, -1);
} else {
$remote_etag = false;
}
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && strlen(trim($_SERVER['HTTP_IF_MODIFIED_SINCE'])) > 0) {
$remote_last_modified = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
} else {
$remote_last_modified = false;
}
$local_last_modified = gmdate("D, d M Y H:i:s", time()) . "GMT";
if (strcmp($remote_etag, $local_etag) == 0) {
header("Etag: \"{$remote_etag}\"", true);
header("Expires: {$local_last_modified}", true);
header("Last-Modified: {$remote_last_modified}", true);
header('Cache-Control: private, must-revalidate', true);
header_status(304, 'Not Modified');
exit;
}
header("Etag: \"{$local_etag}\"", true);
header("Expires: {$local_last_modified}", true);
header("Last-Modified: {$local_last_modified}", true);
header('Cache-Control: private, must-revalidate', true);
return true;
}
function html_frame($src, $name, $frameborder = 0, $scrolling = '', $noresize = '')
{
$this->src = $src;
$this->name = $name;
if (in_array($scrolling, array('yes', 'no'))) {
$this->scrolling = sprintf(' scrolling="%s"', htmlentities_array($scrolling));
}
if (in_array($noresize, array('noresize'))) {
$this->noresize = sprintf(' noresize="%s"', htmlentities_array($noresize));
}
if (browser_check(BROWSER_WEBKIT)) {
$this->frameborder = 1;
} else {
$this->frameborder = is_numeric($frameborder) ? $frameborder : 0;
}
if (browser_check(BROWSER_MSIE)) {
$this->allowtransparency = ' allowtransparency="true"';
}
}
function cache_check_last_modified($last_modified, $etag, $expires = null)
{
if (isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] == 'POST') {
return false;
}
if (browser_check(BROWSER_AOL)) {
return false;
}
if (headers_sent()) {
return false;
}
$cache_expires = gmdate("D, d M Y H:i:s", is_numeric($expires) ? $expires : $last_modified) . " GMT";
$last_modified = gmdate("D, d M Y H:i:s", $last_modified) . " GMT";
$remote_last_modified = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? $_SERVER['HTTP_IF_MODIFIED_SINCE'] : null;
if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && preg_match('/^W\\/"([^"]+)"/', $_SERVER['HTTP_IF_NONE_MATCH'], $matches_array)) {
$remote_etag = isset($matches_array[1]) ? $matches_array[1] : false;
} else {
$remote_etag = false;
}
if ($remote_etag == $etag && $remote_last_modified == $last_modified) {
header("Etag: W/\"{$remote_etag}\"", true);
header("Expires: {$cache_expires}", true);
header("Last-Modified: {$remote_last_modified}", true);
header('Cache-Control: private, must-revalidate', true);
header_status(304, 'Not Modified');
exit;
}
header("Etag: W/\"{$etag}\"", true);
header("Expires: {$cache_expires}", true);
header("Last-Modified: {$last_modified}", true);
header('Cache-Control: private, must-revalidate', true);
return true;
}
