Pear DB 新手入门指南5

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// Define the app environment (this is: what errors you want to output)
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UO0define ('DEBUG_ENV', true);PHPChina 开源社区门户M8z^
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// This function will handle all errorsPHPChina 开源社区门户:yk
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function handle_pear_error ($error_obj) {PHPChina 开源社区门户O*a;AO
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    // Be verbose while developing the applicationPHPChina 开源社区门户HJO+_9^4]@,X
    if (DEBUG_ENV) {
U7h5WAP3Vp1^Z"[0        die ($error_obj->getMessage()."\n".$error_obj->getDebugInfo());
\ PPXI*_&?0    // Dump a silly message if the site is in production
Z?Y-R.C7N0    } else {

}DEQ"i~I0        die ('Sorry you request can not be processed now. Try again later');
J,d5j,B&{0    }
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A0_&CoD#O#w0T0require_once 'DB.php';PHPChina 开源社区门户!eAz#r5q;XJ
// On error, call the "handle_pear_error" function back
p{t+tgz@0// You can also use an object as pear error handler so:
 Uo1{{4E0j0// setErrorHandling(PEAR_ERROR_CALLBACK, array($object,'method_name');
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JTD6N],O;Y0PEAR::setErrorHandling(PEAR_ERROR_CALLBACK, 'handle_pear_error');
s;u'~[@U0$db = DB::connect('pgsql://postgres@localhost/site_db');
2z)o8k-{aI,y%T0$res = $db->query('select id from no_table');
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j{MyT!@%w@J,c0// at this point the execution is aborted and the "handle_pear_error"PHPChina 开源社区门户4Jnwaq,Yd'L-y
// function is called with the error object as its first argument
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{x4`[O0while ($row = $res->fetchRow()) {PHPChina 开源社区门户!EL.KW5qZ
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    ...PHPChina 开源社区门户0[!|aNn|
}
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<?php
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}0error_reporting (E_ALL ^ E_NOTICE);PHPChina 开源社区门户P-lf]4G*\.D
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// this function will handle all errors reported by PHPPHPChina 开源社区门户
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function php_error_handler ($errno, $errstr, $errfile, $errline) {PHPChina 开源社区门户X&k
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    die ("In $errfile, line: $errline\n<br>$errstr");
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+Bk*F&a	XQ2JJG}0set_error_handler ('php_error_handler');PHPChina 开源社区门户enDx?
// this function will catch errors generated by Pear,PHPChina 开源社区门户_`~W8kg
// transform it to PHP errors and trigger them to the php_error_handlerPHPChina 开源社区门户+`{&~|B8@o
function pear_error_handler ($err_obj) {PHPChina 开源社区门户/f)L}:FH7Y#^j
    $error_string = $err_obj->getMessage() . '<br>' . $error_obj->getDebugInfo();

~%Go({KJ1e2b,q0    trigger_error ($error_string, E_USER_ERROR);
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require 'DB.php';PHPChina 开源社区门户:f8LhC+]&o d
PEAR::setErrorHandling (PEAR_ERROR_CALLBACK, 'pear_error_handler');PHPChina 开源社区门户;`mRl3`D
// force an errorPHPChina 开源社区门户Z4`K
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$db = DB::connect('pgsql://postgres@localhost/no_db');
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