April 7th, 2008
I’m using headings in the format:
<hx id="foo">Foo</hx>
Instead of keeping track of an internal page menu by hand, it’s easily to dynamically parse the string with a regular expression (assuming you’re using level 3 headers):
function create_page_navigation(&$string)
{
$menu = array();
$pattern = '/<h3 id="(.+)">(.+)<\/h3>/';
preg_match_all($pattern, $string, $headings);
$headings_num = count($headings[1]);
for ($i = 0; $i < $headings_num; $i++)
{
$menu[] = array('slug' => $headings[1][$i], ‘title’ => $headings[2][$i]);
}
return $menu;
}
This returns an array in the following format:
Array (
[0] => Array ( [slug] => foo [title] => Foo )
[1] => Array ( [slug] => bar [title] => Bar )
)The slug is the URN representation. You can easily iterate through this to create the corresponding HTML list.