<slide title="PEAR Errors (2)">
 <list fontsize="5em">
  <bullet>PEAR::raiseError()</bullet>
 </list>
 <example type="php">
  <text><![CDATA[
    if (!@fopen($file, "r")) {
        return PEAR::raiseError($php_errormsg);
    }

]]></text></example>
 <list fontsize="5em">
  <bullet>PEAR::isError()</bullet>
 </list>
 <example type="php">
  <text><![CDATA[
$res = open_file();
if (PEAR::isError($res)) {
    die("Couldn't open file: " . $res->getMessage());
}
]]></text></example>
 <list fontsize="2em" effect="hide"><bullet>next</bullet></list>
</slide>    
