Description:
------------
Hi! We just upgraded php to 4.3.9 and i'm getting this error message right now. Code looks fine.
So my guess it's some how related to the upgraded.



Reproduce code:
---------------
	function select()
	{
		$this->onSelect();
        $objDB = createDataBase();
        $sOrderBy = getValue("order_by", $GLOBALS["Variables"]);
        if ($sOrderBy != "")
        {
        	$vtrFieldArray = getValue($sOrderBy, $this->m_vtrFields);
        	if (gettype($vtrFieldArray) == 'array')
        	{
        		$sOrderBy = " order by ".($vtrFieldArray[1])." asc";
        	}
        	else
        	{
        		$sOrderBy = "";
        	}   	
        }
        $sRequest = "select ";
        for ($nCount = 0; $nCount < count($this->m_vtrFields); ++$nCount)
        {
        	if ($nCount != 0)
        	{
        		$sRequest .= " , ";
        	}
        	$sRequest .= $this->m_vtrFields[$nCount][1];
        }
        $sRequest .= " from ";
        for ($nCount = 0; $nCount < count($this->m_vtrTables); ++$nCount)
        {
        	if ($nCount != 0)
        	{
        		$sRequest .= " , ";
        	}
        	$sRequest .= $this->m_vtrTables[$nCount];
        }
        if (($this->m_nID != "") || ($this->m_sWhereClause != ""))
        {    	        		
        	$sRequest .= " where ";
        }               
        if ($this->m_nID != "")
        {
        	$sRequest .= " ".$this->m_vtrTables[0].".id=".$this->m_nID;
        	if ($this->m_sWhereClause != "")	
        	{
        		$sRequest .= " and ";
        	}
        }
        
        if ($this->m_sGroupClause != "")
        {    	        		
        	$sRequest .= $this->m_sGroupClause;
        }
        
        $sRequest .= $this->m_sWhereClause;
        $sRequest .= $sOrderBy;        
        
        
        $this->m_vtrResultTable = $objDB->execute($sRequest);        
	}

Actual result:
--------------
Fatal error: Call to undefined function: onselect()