Title: template-functions-post.php foreach error
Last modified: August 18, 2016

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# template-functions-post.php foreach error

 *  [himysk](https://wordpress.org/support/users/himysk/)
 * (@himysk)
 * [21 years, 2 months ago](https://wordpress.org/support/topic/template-functions-postphp-foreach-error/)
 * Hello,
 * Pages and especially sub-pages have began acting problematically.
 * 1.) When I click on a Page, the page loads but all links to all other pages vanish.
 * 2.) If I click on a sub-page, the page loads but the following error is produced
   in the location where the links to each page would normally appear:
 * Warning: Invalid argument supplied for foreach() in /home/mysknet/public_html/
   wp-includes/template-functions-post.php on line 368
 * This error occurrs in the theme that I was previously using, so it’s not likely
   related to the newest theme that I’ve began using.
 * The only other two changes that come to mind are:
 * 1.) I deleted the Classic theme. Never likely to use it.
 * 2.) I’ve began using a perma link structure as per the Mod_Rewrite Trackback 
   Spam Blocker suggested in the codex and found at this location: [http://blog.mytechaid.com/archives/2005/03/09/wordpress-trackback-spam-solution/](http://blog.mytechaid.com/archives/2005/03/09/wordpress-trackback-spam-solution/)
 * Other than that I can think of no meaningful changes. I have certainly not made
   any changes to the template-functions-post.php file.
 * My blog can be found at [http://www.himysk.com/](http://www.himysk.com/)
 * ~Mysk

Viewing 6 replies - 1 through 6 (of 6 total)

 *  Thread Starter [himysk](https://wordpress.org/support/users/himysk/)
 * (@himysk)
 * [21 years, 2 months ago](https://wordpress.org/support/topic/template-functions-postphp-foreach-error/#post-166508)
 * I’m updating this thread with additional information that I hope will help diagnose
   the problem.
 * I have switched between all of the themes that I have installed and have found
   one theme out of all of them that does not create the error.
 * The default theme will not show any of the problems listed in my original post.
   The other themes – which have links for the pages – do produce the error.
 * Additionally, I have re-uploaded the classic theme “just in case” and have found
   this to not fix the problem. The classic theme does produce the error as well.
 * ~Mysk
    edit: do != does, typo fix
 *  Thread Starter [himysk](https://wordpress.org/support/users/himysk/)
 * (@himysk)
 * [21 years, 2 months ago](https://wordpress.org/support/topic/template-functions-postphp-foreach-error/#post-167050)
 * I don’t suppose that I can get some help with this? Tips, links, anything?
 *  Thread Starter [himysk](https://wordpress.org/support/users/himysk/)
 * (@himysk)
 * [21 years, 2 months ago](https://wordpress.org/support/topic/template-functions-postphp-foreach-error/#post-167092)
 * Hmm… Real useful bunch here.
 *  [Ulrich](https://wordpress.org/support/users/ulrich/)
 * (@ulrich)
 * [21 years, 2 months ago](https://wordpress.org/support/topic/template-functions-postphp-foreach-error/#post-167114)
 * Hi
 * I have the same problem… Haven’t figured out how to fix it yet. If you do please
   post the solution here.
 *  [garethjmsaunders](https://wordpress.org/support/users/garethjmsaunders/)
 * (@garethjmsaunders)
 * [21 years, 1 month ago](https://wordpress.org/support/topic/template-functions-postphp-foreach-error/#post-167170)
 * Interestingly, I only seem to get this error when I click on the link in the 
   Pages list in the sidebar that in Page Management in the Admin Control Panel 
   looks like
 *  �? �? NYC Press cuttings
 * but has subpages beneath it, eg
 *  �? �? �? The Evening Post, Bristol January 2002
    �? �? �? The Guardian,
   August 2000
 * But I don’t get the error with the other second-level pages (ie those with no
   subpages).
 * Curious.
 * Later: I’ve also realised that I get the error using my own page template file(
   although it works fine with the default page template).
 * I can’t see that it’s got anything to do with the code in my template file, which
   is cut and paste from the page.php file with a suitable
 * `<?php
    /* Template Name: NYC_Press_Listing */ ?>
 * in place at the top.
 * I simply wanted the page to display an introduction (written in the Page Content,
   and then to list the children of the page with ID of 25:
 * `<?php wp_list_pages ('child_of=25&sort_column=ID&title_li='); ?>`
 * But even when I have a completely empty template file, eg
 * `<?php
    /* Template Name: NYC_Press_Listing */ ?> <?php get_header(); ?> <div
   id="content"> </div> <?php get_sidebar(); ?> <?php get_footer(); ?>
 * I get the same error.
 *  [garethjmsaunders](https://wordpress.org/support/users/garethjmsaunders/)
 * (@garethjmsaunders)
 * [21 years, 1 month ago](https://wordpress.org/support/topic/template-functions-postphp-foreach-error/#post-167171)
 * Looking into this matter more closely I discovered that I would get the error
   if I was using my own page template, but not if I was using the default page 
   template (which was odd since my template was simply a cut-and-paste of the default
   page, with a few minor additions; and it would even throw up the error if I had
   a completely empty #content div!).
 * I wondered if it was indeed to do with the template-functions-post.php file, 
   so backed up the latest version and copied over a version from the first WP1.5
   installation I downloaded (the file is 12KB and dated 2005-02-15 at 01:21) and…
   it worked! I get no error now.
 * I’ve run the two files through a file-comparison application (the freeware ExamDiff)
   and these are the lines that have changed:
 * >  Line 262 used to have:
   > `function get_pages($args = '') {
   >  global $wpdb;
 * and is now
 * >  `function get_pages($args = '') {
   >  global $wpdb, $cache_pages;
   >  if (!isset($cache_pages) || empty($cache_pages)) {
 * Then further on line 292 (in the latest) file has an addition. What was `"ID,
   post_title,post_parent " .` is now `"ID, post_title, post_name, post_parent ".`
 * A further (larger) addition, around line 300. In the old file:
 * >  `
   >  return $pages;
 * becomes
 * >  `
   >  $cache_pages = array(); if (count($pages)) { foreach($pages as $page) {
   > $cache_pages[$page->ID] = $page; } } }
   >  return $cache_pages;
 * And finally, around line 330 in the new file (319 in the old):
 * >  $page_tree[$page->ID][‘title’] = $page->post_title;
   >  $page_tree[$page->ID][‘
   > name’] = $page->post_name;
 * The latter line there is new. The new file is 401 lines long, the old 390. I’m
   guessing that the problem lies with the addition of the new code.
 * I’ve read elsewhere on this forum that someone reckoned the error to lie in the`
   if (!isset($cache_pages) || empty($cache_pages)) {` line.
 * That’s all from me tonight.

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘template-functions-post.php foreach error’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 6 replies
 * 3 participants
 * Last reply from: [garethjmsaunders](https://wordpress.org/support/users/garethjmsaunders/)
 * Last activity: [21 years, 1 month ago](https://wordpress.org/support/topic/template-functions-postphp-foreach-error/#post-167171)
 * Status: not resolved

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