Description
   Static version of 
   PEAR_ErrorStack::hasErrors().  
    
   Returns TRUE if any singleton stack has any errors pending.  
    
   Since PEAR 1.3.2, If $package 
   is specified, it will call PEAR_ErrorStack::hasErrors
   for the singleton error stack of that package.  
    
   If level is specified, hasErrors will ignore
   any errors not conforming to the error level specified.  
    
   Use this to simulate error_reporting(E_NOTICE), for example