How to get the index number of a page with siblings?

[kixe]

To get a page by index number from a PageArray is easy:

/* returns a page object */
$pagebyindex = $myparentpage->children->eq(integer $num);

Now I needed a function which returns the Index of the page from the siblings. It took me a while to figure this out, and I like to share this here:

/* returns an integer */
$indexbypage = $myparentpage->children->getItemKey($page); // or
$indexbypage = $page->siblings->getItemKey($page);

Found this information in http://cheatsheet.processwire.com/ under section PageArray/WireArray and here:

http://processwire.com/apigen/
To get complete information about API this page is your (and my) friend.

Have a nice day

[kongondo]

These are similarly useful

WireArray: http://processwire.com/api/arrays/

PageArray: http://processwire.com/api/arrays/page/