Iframe fout: geen URL opgegeven.
'; } // Remove all HTML tags, newlines, tabs, and spaces $url = strip_tags($content); // remove,
, etc.
$url = str_replace(["\r","\n","\t"], '', $url); // remove line breaks/tabs
$url = trim($url); // remove leading/trailing spaces
$url = esc_url($url); // sanitize
if (empty($url)) {
return '
Iframe fout: ongeldige URL.
'; } $height = 800; $scrolling = 'auto'; // Return the iframe HTML return << HTML; } add_shortcode('iframe', 'philidor_iframe_shortcode');