<?php
/* rewrite links in content to open in new windows */
fof_add_render_filter('fof_item_targets');
function fof_item_targets($content)
{
/* quiet warnings */
$old_xml_err = libxml_use_internal_errors(true);
$dom = new DOMDocument();
/*
Load content into DOM, within a div wrapper. Wrapper div will be
stripped before returning altered content. Without doing this,
any bare text content would get wrapped in p elements while being
parsed in.
*/
$dom->loadHtml('<div>' . mb_convert_encoding($content, 'HTML-ENTITIES', "UTF-8") . '</div>');
/* strip <!DOCTYPE> which DOMDocument adds */
$dom->removeChild($dom->firstChild);
/* strip <html><body> which DOMDocument adds */
$dom->replaceChild($dom->firstChild->firstChild->firstChild, $dom->firstChild);
/* replace or add link targets */
$xpath = new DOMXpath($dom);
foreach ($xpath->query('//a') as $node) {
$node->setAttribute('target', '_blank');
}
$content_out = '';
/* emit the updated contents inside our div */
/* start at the first node inside first div.. */
$node = $dom->firstChild->firstChild;
while ($node) {
$content_out .= $dom->saveHTML($node);
<?php
/* load images on-demand */
fof_add_render_filter('fof_images_on_demand');
function fof_images_on_demand($content)
{
// AJAX refresh: we don't apply this filter, because images are
// probably already loaded
if ($_REQUEST['no_img_filter']) {
return $content;
}
/* quiet warnings */
$old_xml_err = libxml_use_internal_errors(true);
$dom = new DOMDocument();
// hack borrowed from http://beerpla.net/projects/smartdomdocument-a-smarter-php-domdocument-class/
$dom->loadHTML(mb_convert_encoding($content, 'HTML-ENTITIES', "UTF-8"));
foreach ($dom->getElementsByTagName('img') as $img) {
if ($img->hasAttribute('src')) {
$img->setAttribute('data-fof-ondemand-src', $img->getAttribute('src'));
$img->removeAttribute('src');
}
if ($img->hasAttribute('srcset')) {
$img->setAttribute('data-fof-ondemand-srcset', $img->getAttribute('srcset'));
$img->removeAttribute('srcset');
}
}
$content_out = '';
$node = $dom->firstChild;
while ($node) {
$content_out .= $dom->saveHTML($node);
/* repeat for all nodes at this level */
