[TYPO3] page is being generated and PHP fatal error

[Bing Du]

> Hi,
>
> Typo3 4.0.6
>
> For some reason, one page started giving 'Page is being generated, If this
> message does not disappear within 30 seconds, please reload'.  Whenever I
> click the page link in the menu, I noticed the following error was
> generated in the Apache error_log.
>
> [client 129.186.197.119] PHP Fatal error:  Call to undefined function:
> encryptcharcode() in
> /data/www/html/typo3_src-4.0.6/typo3/sysext/cms/tslib/class.tslib_fe.php
> on line 3439
>
> Line 3439 is:
>
>  $out .= $this->encryptCharcode($charValue,0x61,0x7A,$offset);
>
> This page used to work fine.  It has the following content elements:
>
> Text w/ image
> Menu/sitemap
> Text
> Menu/Sitemap
> Text
> Menu/Sitemap
>
> The load on the site is low.  I also don't think it's related to
> extensions because there was no new extension installed before the page
> stopped working.  I checked Tools->Log on the backend and found one user
> inserted and deleted some content on the page.  I don't understand why all
> of a sudden, it started spitting ugly PHP fatal error.  What does
> encryptCharcode() do?
>
> Any clue what might cause the problem?  I'd appreciate any insight.
>
> Thanks,
>
> Bing

I was able to narrow down the problem a little bit.  The problem remains
unsolved.

Looks like it's encrypting email address caused the problem.  The site
template has:

# Spam protect emails!# Convert @ to the @ image in emails
config.spamProtectEmailAddresses = 2
config.spamProtectEmailAddresses_atSubst = <img
src="fileadmin/templates/images/at.gif" align="absbottom" border="0"
alt="@" />

The problematic page has a linked e-mail address. After I removed the
email address or just made it plain text, the page showed up fine.  I
checked the typo3/sysext/cms/tslib/class.tslib_fe.php file and the
function encryptcharcode() the PHP fatal error complained about was
defined fine.  So why it's said undefined??  Also I created a test text
page which just has an email address in it.  Rendering the test page
generated the same PHP fatal error.  What the heck is wrong?

Bing