PHP Objects, Patterns, and Practice, Third Edition

CHAPTER 15 ■ AN INTRODUCTION TO PEAR AND PYRUS

333

class MyFeedClient {

function __construct() {

PEAR_Exception::addObserver( array( $this, "notifyError") );

}

function process() {

try {

$feedt = new MyFeedThing();

$parser = $feedt->acquire('wrong.xml');

} catch ( Exception $e ) {

print "an error occurred. See log for details\n";

}

}

function notifyError( PEAR_Exception $e ) {

print get_class( $e ).":";

print $e->getMessage()."\n";

$cause = $e->getCause();

if ( is_object( $cause ) ) {

print "[cause] ".get_class( $cause ).":";

print $cause->getMessage()."\n";

} else if ( is_array( $cause ) ) {

foreach( $cause as $sub_e ) {

print "[cause] ".get_class( $sub_e ).":";

print $sub_e->getMessage()."\n";

}

}

print "----------------------\n"; ...