PEAR_ErrorStack is an experimental error raising and handling implementation for PEAR that is designed to replace PEAR_Error when it has stabilized. PEAR_ErrorStack is both backwards compatible with PEAR_Error and forward compatible with PHP 5's PEAR_Exception class. There are many other features, all described in the Introduction.
1 // global error stack 2 $global_stack = &PEAR_ErrorStack::singleton
('MyPackage'); 3 // local error stack 4 $local_stack = newPEAR_ErrorStack