定義済み定数
Providing an example...
eac_error.class is a PHP static utility class for error handling. It is intended to be used throughout the PHP application for capture and reporting of errors and exceptions.
The error handling routine in eac_error.class is designed to provide detailed state information for the developer or administrator while still maintaining a secure environment. Error messages are only presented to the web user on true error conditions and do not include information that may be used to compromise the system. Notifications are sent to the webmaster/administrator in an encrypted state (using GnuPG) so that critical, private information cannot be intercepted in transit.
Features
GnuPG encrypted email sent to the web administrator.
Detailed system information included with email.
Function and class trace back information included.
Log errors to a single file or multiple files based on severity (fatal, error, warning ,notice).
Send email notice for each error or for all errors at the end of script execution.
Suppress or allow options (email, display, logging, etc.) when error is triggered.
Provide a program-designated error code with the error message.
Set a callback function to display errors and abort processing.
Include user-defined data in the error notification email.
Error condition detectable by AJAX and CURL.
http://www.kevinburkholder.com/sw_error.php
例
エラー処理機能を PHP で使用するための例を示します。 ファイルに(XML 形式で)情報を記録し、論理的に致命的なエラーの場合に、 開発者に電子メールを送信するようなエラー処理関数を定義します。
例1 スクリプト内でのエラー処理
<?php
// 自分のエラーハンドリングを行います
error_reporting(0);
// ユーザーの定義したエラーハンドリング関数
function userErrorHandler($errno, $errmsg, $filename, $linenum, $vars)
{
// エラーエントリのタイムスタンプ
$dt = date("Y-m-d H:i:s (T)");
// エラー文字列の連想配列を定義します。
// 実際のところ、考慮する必要があるのは
// E_WARNING、E_NOTICE、E_USER_ERROR、
// E_USER_WARNING そして E_USER_NOTICE だけです。
$errortype = array (
E_ERROR => 'Error',
E_WARNING => 'Warning',
E_PARSE => 'Parsing Error',
E_NOTICE => 'Notice',
E_CORE_ERROR => 'Core Error',
E_CORE_WARNING => 'Core Warning',
E_COMPILE_ERROR => 'Compile Error',
E_COMPILE_WARNING => 'Compile Warning',
E_USER_ERROR => 'User Error',
E_USER_WARNING => 'User Warning',
E_USER_NOTICE => 'User Notice',
E_STRICT => 'Runtime Notice',
E_RECOVERABLE_ERROR => 'Catchable Fatal Error'
);
// set of errors for which a var trace will be saved
$user_errors = array(E_USER_ERROR, E_USER_WARNING, E_USER_NOTICE);
$err = "<errorentry>\n";
$err .= "\t<datetime>" . $dt . "</datetime>\n";
$err .= "\t<errornum>" . $errno . "</errornum>\n";
$err .= "\t<errortype>" . $errortype[$errno] . "</errortype>\n";
$err .= "\t<errormsg>" . $errmsg . "</errormsg>\n";
$err .= "\t<scriptname>" . $filename . "</scriptname>\n";
$err .= "\t<scriptlinenum>" . $linenum . "</scriptlinenum>\n";
if (in_array($errno, $user_errors)) {
$err .= "\t<vartrace>" . wddx_serialize_value($vars, "Variables") . "</vartrace>\n";
}
$err .= "</errorentry>\n\n";
// テスト用
// echo $err;
// エラーログを保存し、重大なユーザーエラーは自分にメールする
error_log($err, 3, "/usr/local/php4/error.log");
if ($errno == E_USER_ERROR) {
mail("phpdev@example.com", "Critical User Error", $err);
}
}
function distance($vect1, $vect2)
{
if (!is_array($vect1) || !is_array($vect2)) {
trigger_error("Incorrect parameters, arrays expected", E_USER_ERROR);
return NULL;
}
if (count($vect1) != count($vect2)) {
trigger_error("Vectors need to be of the same size", E_USER_ERROR);
return NULL;
}
for ($i=0; $i<count($vect1); $i++) {
$c1 = $vect1[$i]; $c2 = $vect2[$i];
$d = 0.0;
if (!is_numeric($c1)) {
trigger_error("Coordinate $i in vector 1 is not a number, using zero",
E_USER_WARNING);
$c1 = 0.0;
}
if (!is_numeric($c2)) {
trigger_error("Coordinate $i in vector 2 is not a number, using zero",
E_USER_WARNING);
$c2 = 0.0;
}
$d += $c2*$c2 - $c1*$c1;
}
return sqrt($d);
}
$old_error_handler = set_error_handler("userErrorHandler");
// 未定義定数による警告の生成
$t = I_AM_NOT_DEFINED;
// いくつかの「ベクタ」定義
$a = array(2, 3, "foo");
$b = array(5.5, 4.3, -1.6);
$c = array(1, -3);
// ユーザエラーの生成
$t1 = distance($c, $b) . "\n";
// 他のユーザエラーの生成
$t2 = distance($b, "i am not an array") . "\n";
// 警告の生成
$t3 = distance($a, $b) . "\n";
?>
add a note
User Contributed Notes例
KBurkholder at EarthAsylum dot com
29-Jun-2008 09:29
29-Jun-2008 09:29