自定义PHP系统异常处理类

001    <?php
002     
003    // 自定义异常函数
004    set_exception_handler(‘handle_exception‘);
005     
006    // 自定义错误函数
007    set_error_handler(‘handle_error‘);
008     
009    /**
010     * 异常处理
011     *
012     * @param mixed $exception 异常对象
013     * @author blog.snsgou.com
014     */
015    function handle_exception($exception) {
016        Error::exceptionError($exception);
017    }
018     
019    /**
020     * 错误处理
021     *
022     * @param string $errNo 错误代码
023     * @param string $errStr 错误信息
024     * @param string $errFile 出错文件
025     * @param string $errLine 出错行
026     * @author blog.snsgou.com
027     */
028    function handle_error($errNo, $errStr, $errFile, $errLine) {
029        if ($errNo) {
030            Error::systemError($errStr, false, true, false);
031        }
032    }
033     
034    /**
035     * 系统错误处理
036     *
037     * @author blog.snsgou.com
038     */
039    class Error {
040     
041        public static function systemError($message, $show = true, $save = true, $halt = true) {
042     
043            list($showTrace, $logTrace) = self::debugBacktrace();
044     
045            if ($save) {
046                $messageSave = ‘<b>‘ . $message . ‘</b><br /><b>PHP:</b>‘ . $logTrace;
047                self::writeErrorLog($messageSave);
048            }
049     
050            if ($show) {
051                self::showError(‘system‘, "<li>$message</li>", $showTrace, 0);
052            }
053     
054            if ($halt) {
055                exit();
056            } else {
057                return $message;
058            }
059        }
060     
061        /**
062         * 代码执行过程回溯信息
063         *
064         * @static
065         * @access public
066         */
067        public static function debugBacktrace() {
068            $skipFunc[] = ‘Error->debugBacktrace‘;
069     
070            $show = $log = ‘‘;
071            $debugBacktrace = debug_backtrace();
072            ksort($debugBacktrace);
073            foreach ($debugBacktrace as $k => $error) {
074                if (!isset($error[‘file‘])) {
075                    // 利用反射API来获取方法/函数所在的文件和行数
076                    try {
077                        if (isset($error[‘class‘])) {
078                            $reflection = new ReflectionMethod($error[‘class‘], $error[‘function‘]);
079                        } else {
080                            $reflection = new ReflectionFunction($error[‘function‘]);
081                        }
082                        $error[‘file‘] = $reflection->getFileName();
083                        $error[‘line‘] = $reflection->getStartLine();
084                    } catch (Exception $e) {
085                        continue;
086                    }
087                }
088     
089                $file = str_replace(SITE_PATH, ‘‘, $error[‘file‘]);
090                $func = isset($error[‘class‘]) ? $error[‘class‘] : ‘‘;
091                $func .= isset($error[‘type‘]) ? $error[‘type‘] : ‘‘;
092                $func .= isset($error[‘function‘]) ? $error[‘function‘] : ‘‘;
093                if (in_array($func, $skipFunc)) {
094                    break;
095                }
096                $error[‘line‘] = sprintf(‘%04d‘, $error[‘line‘]);
097     
098                $show .= ‘<li>[Line: ‘ . $error[‘line‘] . ‘]‘ . $file . ‘(‘ . $func . ‘)</li>‘;
099                $log .= !empty($log) ? ‘ -> ‘ : ‘‘;
100                $log .= $file . ‘:‘ . $error[‘line‘];
101            }
102            return array($show, $log);
103        }
104     
105        /**
106         * 异常处理
107         *
108         * @static
109         * @access public
110         * @param mixed $exception
111         */
112        public static function exceptionError($exception) {
113            if ($exception instanceof DbException) {
114                $type = ‘db‘;
115            } else {
116                $type = ‘system‘;
117            }
118            if ($type == ‘db‘) {
119                $errorMsg = ‘(‘ . $exception->getCode() . ‘) ‘;
120                $errorMsg .= self::sqlClear($exception->getMessage(), $exception->getDbConfig());
121                if ($exception->getSql()) {
122                    $errorMsg .= ‘<div class="sql">‘;
123                    $errorMsg .= self::sqlClear($exception->getSql(), $exception->getDbConfig());
124                    $errorMsg .= ‘</div>‘;
125                }
126            } else {
127                $errorMsg = $exception->getMessage();
128            }
129            $trace = $exception->getTrace();
130            krsort($trace);
131            $trace[] = array(‘file‘ => $exception->getFile(), ‘line‘ => $exception->getLine(), ‘function‘ => ‘break‘);
132            $phpMsg = array();
133            foreach ($trace as $error) {
134                if (!empty($error[‘function‘])) {
135                    $fun = ‘‘;
136                    if (!empty($error[‘class‘])) {
137                        $fun .= $error[‘class‘] . $error[‘type‘];
138                    }
139                    $fun .= $error[‘function‘] . ‘(‘;
140                    if (!empty($error[‘args‘])) {
141                        $mark = ‘‘;
142                        foreach ($error[‘args‘] as $arg) {
143                            $fun .= $mark;
144                            if (is_array($arg)) {
145                                $fun .= ‘Array‘;
146                            } elseif (is_bool($arg)) {
147                                $fun .= $arg ? ‘true‘ : ‘false‘;
148                            } elseif (is_int($arg)) {
149                                $fun .= (defined(‘SITE_DEBUG‘) && SITE_DEBUG) ? $arg : ‘%d‘;
150                            } elseif (is_float($arg)) {
151                                $fun .= (defined(‘SITE_DEBUG‘) && SITE_DEBUG) ? $arg : ‘%f‘;
152                            } else {
153                                $fun .= (defined(‘SITE_DEBUG‘) && SITE_DEBUG) ? ‘\‘‘ . htmlspecialchars(substr(self::clear($arg), 0, 10)) . (strlen($arg) > 10 ? ‘ ...‘ : ‘‘) . ‘\‘‘ : ‘%s‘;
154                            }
155                            $mark = ‘, ‘;
156                        }
157                    }
158                    $fun .= ‘)‘;
159                    $error[‘function‘] = $fun;
160                }
161                if (!isset($error[‘line‘])) {
162                    continue;
163                }
164                $phpMsg[] = array(‘file‘ => str_replace(array(SITE_PATH, ‘\\‘), array(‘‘, ‘/‘), $error[‘file‘]), ‘line‘ => $error[‘line‘], ‘function‘ => $error[‘function‘]);
165            }
166            self::showError($type, $errorMsg, $phpMsg);
167            exit();
168        }
169     
170        /**
171         * 记录错误日志
172         *
173         * @static
174         * @access public
175         * @param string $message
176         */
177        public static function writeErrorLog($message) {
178     
179            return false; // 暂时不写入
180     
181            $message = self::clear($message);
182            $time = time();
183            $file = LOG_PATH . ‘/‘ . date(‘Y.m.d‘) . ‘_errorlog.php‘;
184            $hash = md5($message);
185     
186            $userId = 0;
187            $ip = get_client_ip();
188     
189            $user = ‘<b>User:</b> userId=‘ . intval($userId) . ‘; IP=‘ . $ip . ‘; RIP:‘ . $_SERVER[‘REMOTE_ADDR‘];
190            $uri = ‘Request: ‘ . htmlspecialchars(self::clear($_SERVER[‘REQUEST_URI‘]));
191            $message = "<?php exit;?>\t{$time}\t$message\t$hash\t$user $uri\n";
192     
193            // 判断该$message是否在时间间隔$maxtime内已记录过，有，则不用再记录了
194            if (is_file($file)) {
195                $fp = @fopen($file, ‘rb‘);
196                $lastlen = 50000;       // 读取最后的 $lastlen 长度字节内容
197                $maxtime = 60 * 10;     // 时间间隔：10分钟
198                $offset = filesize($file) - $lastlen;
199                if ($offset > 0) {
200                    fseek($fp, $offset);
201                }
202                if ($data = fread($fp, $lastlen)) {
203                    $array = explode("\n", $data);
204                    if (is_array($array))
205                        foreach ($array as $key => $val) {
206                            $row = explode("\t", $val);
207                            if ($row[0] != ‘<?php exit;?>‘) {
208                                continue;
209                            }
210                            if ($row[3] == $hash && ($row[1] > $time - $maxtime)) {
211                                return;
212                            }
213                        }
214                }
215            }
216     
217            error_log($message, 3, $file);
218        }
219     
220        /**
221         * 清除文本部分字符
222         *
223         * @param string $message
224         */
225        public static function clear($message) {
226            return str_replace(array("\t", "\r", "\n"), " ", $message);
227        }
228     
229        /**
230         * sql语句字符清理
231         *
232         * @static
233         * @access public
234         * @param string $message
235         * @param string $dbConfig
236         */
237        public static function sqlClear($message, $dbConfig) {
238            $message = self::clear($message);
239            if (!(defined(‘SITE_DEBUG‘) && SITE_DEBUG)) {
240                $message = str_replace($dbConfig[‘database‘], ‘***‘, $message);
241                //$message = str_replace($dbConfig[‘prefix‘], ‘***‘, $message);
242                $message = str_replace(C(‘DB_PREFIX‘), ‘***‘, $message);
243            }
244            $message = htmlspecialchars($message);
245            return $message;
246        }
247     
248        /**
249         * 显示错误
250         *
251         * @static
252         * @access public
253         * @param string $type 错误类型 db,system
254         * @param string $errorMsg
255         * @param string $phpMsg
256         */
257        public static function showError($type, $errorMsg, $phpMsg = ‘‘) {
258            global $_G;
259     
260            $errorMsg = str_replace(SITE_PATH, ‘‘, $errorMsg);
261            ob_end_clean();
262            $host = $_SERVER[‘HTTP_HOST‘];
263            $title = $type == ‘db‘ ? ‘Database‘ : ‘System‘;
264            echo <<<EOT
265    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
266    <html>
267    <head>
268        <title>$host - $title Error</title>
269        <meta http-equiv="Content-Type" content="text/html; charset={$_G[‘config‘][‘output‘][‘charset‘]}" />
270        <meta name="ROBOTS" content="NOINDEX,NOFOLLOW,NOARCHIVE" />
271        <style type="text/css">
272        <!--
273        body { background-color: white; color: black; font: 9pt/11pt verdana, arial, sans-serif;}
274        #container {margin: 10px;}
275        #message {width: 1024px; color: black;}
276        .red {color: red;}
277        a:link {font: 9pt/11pt verdana, arial, sans-serif; color: red;}
278        a:visited {font: 9pt/11pt verdana, arial, sans-serif; color: #4e4e4e;}
279        h1 {color: #FF0000; font: 18pt "Verdana"; margin-bottom: 0.5em;}
280        .bg1 {background-color: #FFFFCC;}
281        .bg2 {background-color: #EEEEEE;}
282        .table {background: #AAAAAA; font: 11pt Menlo,Consolas,"Lucida Console"}
283        .info {
284            background: none repeat scroll 0 0 #F3F3F3;
285            border: 0px solid #aaaaaa;
286            border-radius: 10px 10px 10px 10px;
287            color: #000000;
288            font-size: 11pt;
289            line-height: 160%;
290            margin-bottom: 1em;
291            padding: 1em;
292        }
293     
294        .help {
295            background: #F3F3F3;
296            border-radius: 10px 10px 10px 10px;
297            font: 12px verdana, arial, sans-serif;
298            text-align: center;
299            line-height: 160%;
300            padding: 1em;
301        }
302     
303        .sql {
304            background: none repeat scroll 0 0 #FFFFCC;
305            border: 1px solid #aaaaaa;
306            color: #000000;
307            font: arial, sans-serif;
308            font-size: 9pt;
309            line-height: 160%;
310            margin-top: 1em;
311            padding: 4px;
312        }
313        -->
314        </style>
315    </head>
316    <body>
317    <div id="container">
318    <h1>$title Error</h1>
319    <div class=‘info‘>$errorMsg</div>
320    EOT;
321            if (!empty($phpMsg)) {
322                echo ‘<div class="info">‘;
323                echo ‘<p><strong>PHP Debug</strong></p>‘;
324                echo ‘<table cellpadding="5" cellspacing="1" width="100%" class="table"><tbody>‘;
325                if (is_array($phpMsg)) {
326                    echo ‘<tr class="bg2"><td>No.</td><td>File</td><td>Line</td><td>Code</td></tr>‘;
327                    foreach ($phpMsg as $k => $msg) {
328                        $k++;
329                        echo ‘<tr class="bg1">‘;
330                        echo ‘<td>‘ . $k . ‘</td>‘;
331                        echo ‘<td>‘ . $msg[‘file‘] . ‘</td>‘;
332                        echo ‘<td>‘ . $msg[‘line‘] . ‘</td>‘;
333                        echo ‘<td>‘ . $msg[‘function‘] . ‘</td>‘;
334                        echo ‘</tr>‘;
335                    }
336                } else {
337                    echo ‘<tr><td><ul>‘ . $phpMsg . ‘</ul></td></tr>‘;
338                }
339                echo ‘</tbody></table></div>‘;
340            }
341            echo <<<EOT
342    </div>
343    </body>
344    </html>
345    EOT;
346            exit();
347        }
348    }
349     
350    /**
351     * DB异常类
352     *
353     * @author blog.snsgou.com
354     */
355    class DbException extends Exception {
356     
357        protected $sql;
358        protected $dbConfig;    // 当前数据库配置信息
359     
360        public function __construct($message, $code = 0, $sql = ‘‘, $dbConfig = array()) {
361            $this->sql = $sql;
362            $this->dbConfig = $dbConfig;
363            parent::__construct($message, $code);
364        }
365     
366        public function getSql() {
367            return $this->sql;
368        }
369     
370        public function getDbConfig() {
371            return $this->dbConfig;
372        }
373    }