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Hi, I am a newbie, anyone can tell me how to know the id of current page and top parent page of current page. I search the forum but didnt find the result. sorry. can anyone help.

the id of the current page is
'the_ID()'
unfortunately, i have not yet succeeded in combining the_ID() with other options like "child_of=" etc.

the id of the parent page ... i don't know. sorry.

very thanks, your information is very useful. I think, it is possible to get the top parent page by a function. but my php knowledge is poor.

check this thread:
http://wordpress.org/support/topic/55192?replies=8

i screwed up, the 'the_ID()' is incorrect and should be called 'page_ID()'

what do you want to do with it?

thanks, in fact, I want to change the blix theme to be used by myself. when I click the page on the top, I hope the children are shown on hte sidebar. it any plugin can do this.

uff, i can barely manage to find my way in the default theme :)
sorry, children in sidebars dependant on the selected page is currently way beyond my knowledge.
sorry.

in fact, I find a way to show the children of the selected page.
<backticks>
<?php
global $post;
$page_id = $post->ID;
wp_list_pages("child_of=$page_id");
?>
</backticks>

but I still want to know the top parent page id of current page, so I can highlight the menu.

I wrote a function to get the top parent page id, would you like help me check it.
<backticks>
function BX_top_parent_page()
{
global $post;
$BX_post = $post;
$topparentpageid = $post->ID;
while (the_post($topparentpageid)->post_parent) {
$topparentpageid = the_post($topparentpageid)->post_parent;
}
return $topparentpageid;
}
</backticks>

finnally i got it
<?php

/**
* Function BX_archive
* ------------------------------------------------------
* This function is based on WP's built-in get_archives()
* It outputs the following:
*
* <h3>Month Year</h3>
* <ul class="postspermonth">
*