PHP fatal error

[John Lester]

This pops up in my error logs every once in awhile. I've not had any complaints about anything specific not working, nor have I been online when the error occurs.

vB.com wanted me to open a ticket and disable/uninstall all mods and upload a clean vB. I don't really want to do that since a lot of my members have neurological disorders and can't cope with change well (all the back n forth breaks some of the mods they use).

PHP Fatal error: Call to undefined function fetch_phrase() in /home2/nonyabiz/public_html/includes/functions.php on line 3518

Here's lines 3468 to 3529 (in case any of the preceding code is relevant) with 3518 in red.

// #############################################################################
/**
* Fetches an error phrase from the database and inserts values for its embedded variables
*
* @param	string	Varname of error phrase
* @param	mixed	Value of 1st variable
* @param	mixed	Value of 2nd variable
* @param	mixed	Value of Nth variable
*
* @return	string	The parsed phrase text
*/
function fetch_error()
{
	global $vbulletin;

	$args = func_get_args();

	// Allow an array of phrase and variables to be passed in as arg0 (for some internal functions)
	if (is_array($args[0]))
	{
		$args = $args[0];
	}

	if (class_exists('vBulletinHook', false))
	{
		($hook = vBulletinHook::fetch_hook('error_fetch')) ? eval($hook) : false;
	}

	if (!function_exists('fetch_phrase') AND !VB_API)
	{
		require_once(DIR . '/includes/functions_misc.php');
	}

	if ($vbulletin->GPC['ajax'])
	{
		switch ($args[0])
		{
			case 'invalidid':
			case 'nopermission_loggedin':
			case 'forumpasswordmissing':
				$args[0] = $args[0] . '_ajax';
		}
	}

	// API only needs error phrase name and args.
	if (defined('VB_API') AND VB_API === true)
	{
		return $args;
	}

	$args[0] = fetch_phrase($args[0], 'error', '', false);
	if (sizeof($args) > 1)
	{
		return call_user_func_array('construct_phrase', $args);
	}
	else
	{
		return $args[0];
	}
}

// #############################################################################

[Lynne]

What version vb are you running? Do you have any plugins using the hook location error_fetch ?

[John Lester]

4.1.5 and I don't know if any of the plugins use that hook Can I find out without having to go through every line of code in every file?

[Lynne]

Just look at the Plugin Manager > look at the column where it says hook location.

[John Lester]

There are none that hook into error_fetch

[Lynne]

Are you using a language pack?

[John Lester]

No, no language packs used.

EDIT: I used winmerge to compare a clean file and the live file and they are identical. So we know nothing is wrong with the file itself.

Could a style be causing this? I do have a few styles installed.

EDIT 2: This is how long and how often this error has been occuring. As you can see it's erratic and I can't find any other errors or slow queries to correspond with the dates and times.

[21-Aug-2011 07:16:32]
[22-Aug-2011 06:54:29]
[23-Aug-2011 17:33:24]
[23-Aug-2011 17:38:54]
[24-Aug-2011 04:40:42]
[24-Aug-2011 19:32:14]
[25-Aug-2011 09:16:58]
[26-Aug-2011 12:11:21]
[29-Aug-2011 04:35:31]
[29-Aug-2011 04:35:31]
[31-Aug-2011 01:56:08]
[03-Sep-2011 22:16:53]

[Lynne]

It doesn't look like it happens very often. But, some phrase seems to be missing. I supposed your could reinstall your language file via tools.php. But, I don't know how much I would worry about an error that only happens a couple times a week.

[John Lester]

Yea I'll leave it be for now thanks Lynne