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一个显示效果非常不错的PHP错误、异常处理类_php实例

时间:2021-07-01 10:21:17 帮助过:16人阅读

一、效果图:


二、实现代码

代码如下:

// 自定义异常函数
set_exception_handler('handle_exception');

// 自定义错误函数
set_error_handler('handle_error');

/**
* 异常处理
*
* @param mixed $exception 异常对象
* @author blog.snsgou.com
*/
function handle_exception($exception) {
Error::exceptionError($exception);
}

/**
* 错误处理
*
* @param string $errNo 错误代码
* @param string $errStr 错误信息
* @param string $errFile 出错文件
* @param string $errLine 出错行
* @author blog.snsgou.com
*/
function handle_error($errNo, $errStr, $errFile, $errLine) {
if ($errNo) {
Error::systemError($errStr, false, true, false);
}
}

/**
* 系统错误处理
*
* @author blog.snsgou.com
*/
class Error {

public static function systemError($message, $show = true, $save = true, $halt = true) {

list($showTrace, $logTrace) = self::debugBacktrace();

if ($save) {
$messageSave = '' . $message . '
PHP:' . $logTrace;
self::writeErrorLog($messageSave);
}

if ($show) {
self::showError('system', "

  • $message
  • ", $showTrace, 0);
    }

    if ($halt) {
    exit();
    } else {
    return $message;
    }
    }

    /**
    * 代码执行过程回溯信息
    *
    * @static
    * @access public
    */
    public static function debugBacktrace() {
    $skipFunc[] = 'Error->debugBacktrace';

    $show = $log = '';
    $debugBacktrace = debug_backtrace();
    ksort($debugBacktrace);
    foreach ($debugBacktrace as $k => $error) {
    if (!isset($error['file'])) {
    // 利用反射API来获取方法/函数所在的文件和行数
    try {
    if (isset($error['class'])) {
    $reflection = new ReflectionMethod($error['class'], $error['function']);
    } else {
    $reflection = new ReflectionFunction($error['function']);
    }
    $error['file'] = $reflection->getFileName();
    $error['line'] = $reflection->getStartLine();
    } catch (Exception $e) {
    continue;
    }
    }

    $file = str_replace(SITE_PATH, '', $error['file']);
    $func = isset($error['class']) ? $error['class'] : '';
    $func .= isset($error['type']) ? $error['type'] : '';
    $func .= isset($error['function']) ? $error['function'] : '';
    if (in_array($func, $skipFunc)) {
    break;
    }
    $error['line'] = sprintf('%04d', $error['line']);

    $show .= '

  • [Line: ' . $error['line'] . ']' . $file . '(' . $func . ')
  • ';
    $log .= !empty($log) ? ' -> ' : '';
    $log .= $file . ':' . $error['line'];
    }
    return array($show, $log);
    }

    /**
    * 异常处理
    *
    * @static
    * @access public
    * @param mixed $exception
    */
    public static function exceptionError($exception) {
    if ($exception instanceof DbException) {
    $type = 'db';
    } else {
    $type = 'system';
    }
    if ($type == 'db') {
    $errorMsg = '(' . $exception->getCode() . ') ';
    $errorMsg .= self::sqlClear($exception->getMessage(), $exception->getDbConfig());
    if ($exception->getSql()) {
    $errorMsg .= '';
    $errorMsg .= self::sqlClear($exception->getSql(), $exception->getDbConfig());
    $errorMsg .= '';
    }
    } else {
    $errorMsg = $exception->getMessage();
    }
    $trace = $exception->getTrace();
    krsort($trace);
    $trace[] = array('file' => $exception->getFile(), 'line' => $exception->getLine(), 'function' => 'break');
    $phpMsg = array();
    foreach ($trace as $error) {
    if (!empty($error['function'])) {
    $fun = '';
    if (!empty($error['class'])) {
    $fun .= $error['class'] . $error['type'];
    }
    $fun .= $error['function'] . '(';
    if (!empty($error['args'])) {
    $mark = '';
    foreach ($error['args'] as $arg) {
    $fun .= $mark;
    if (is_array($arg)) {
    $fun .= 'Array';
    } elseif (is_bool($arg)) {
    $fun .= $arg ? 'true' : 'false';
    } elseif (is_int($arg)) {
    $fun .= (defined('SITE_DEBUG') && SITE_DEBUG) ? $arg : '%d';
    } elseif (is_float($arg)) {
    $fun .= (defined('SITE_DEBUG') && SITE_DEBUG) ? $arg : '%f';
    } else {
    $fun .= (defined('SITE_DEBUG') && SITE_DEBUG) ? '\'' . htmlspecialchars(substr(self::clear($arg), 0, 10)) . (strlen($arg) > 10 ? ' ...' : '') . '\'' : '%s';
    }
    $mark = ', ';
    }
    }
    $fun .= ')';
    $error['function'] = $fun;
    }
    if (!isset($error['line'])) {
    continue;
    }
    $phpMsg[] = array('file' => str_replace(array(SITE_PATH, '\\'), array('', '/'), $error['file']), 'line' => $error['line'], 'function' => $error['function']);
    }
    self::showError($type, $errorMsg, $phpMsg);
    exit();
    }

    /**
    * 记录错误日志
    *
    * @static
    * @access public
    * @param string $message
    */
    public static function writeErrorLog($message) {

    return false; // 暂时不写入

    $message = self::clear($message);
    $time = time();
    $file = LOG_PATH . '/' . date('Y.m.d') . '_errorlog.php';
    $hash = md5($message);

    $userId = 0;
    $ip = get_client_ip();

    $user = 'User: userId=' . intval($userId) . '; IP=' . $ip . '; RIP:' . $_SERVER['REMOTE_ADDR'];
    $uri = 'Request: ' . htmlspecialchars(self::clear($_SERVER['REQUEST_URI']));
    $message = "\t{$time}\t$message\t$hash\t$user $uri\n";

    // 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
    if (is_file($file)) {
    $fp = @fopen($file, 'rb');
    $lastlen = 50000; // 读取最后的 $lastlen 长度字节内容
    $maxtime = 60 * 10; // 时间间隔:10分钟
    $offset = filesize($file) - $lastlen;
    if ($offset > 0) {
    fseek($fp, $offset);
    }
    if ($data = fread($fp, $lastlen)) {
    $array = explode("\n", $data);
    if (is_array($array))
    foreach ($array as $key => $val) {
    $row = explode("\t", $val);
    if ($row[0] != '') {
    continue;
    }
    if ($row[3] == $hash && ($row[1] > $time - $maxtime)) {
    return;
    }
    }
    }
    }

    error_log($message, 3, $file);
    }

    /**
    * 清除文本部分字符
    *
    * @param string $message
    */
    public static function clear($message) {
    return str_replace(array("\t", "\r", "\n"), " ", $message);
    }

    /**
    * sql语句字符清理
    *
    * @static
    * @access public
    * @param string $message
    * @param string $dbConfig
    */
    public static function sqlClear($message, $dbConfig) {
    $message = self::clear($message);
    if (!(defined('SITE_DEBUG') && SITE_DEBUG)) {
    $message = str_replace($dbConfig['database'], '***', $message);
    //$message = str_replace($dbConfig['prefix'], '***', $message);
    $message = str_replace(C('DB_PREFIX'), '***', $message);
    }
    $message = htmlspecialchars($message);
    return $message;
    }

    /**
    * 显示错误
    *
    * @static
    * @access public
    * @param string $type 错误类型 db,system
    * @param string $errorMsg
    * @param string $phpMsg
    */
    public static function showError($type, $errorMsg, $phpMsg = '') {
    global $_G;

    $errorMsg = str_replace(SITE_PATH, '', $errorMsg);
    ob_end_clean();
    $host = $_SERVER['HTTP_HOST'];
    $title = $type == 'db' ? 'Database' : 'System';
    echo <<


    $host - $title Error






    $title Error


    $errorMsg
    EOT;
    if (!empty($phpMsg)) {
    echo '';
    echo '

    PHP Debug

    ';
    echo '';
    if (is_array($phpMsg)) {
    echo '';
    foreach ($phpMsg as $k => $msg) {
    $k++;
    echo '';
    echo '';
    echo '';
    echo '';
    echo '';
    echo '';
    }
    } else {
    echo '';
    }
    echo '
    No.FileLineCode
    ' . $k . '' . $msg['file'] . '' . $msg['line'] . '' . $msg['function'] . '
      ' . $phpMsg . '
    ';
    }
    echo <<


    EOT;
    exit();
    }
    }

    /**
    * DB异常类
    *
    * @author blog.snsgou.com
    */
    class DbException extends Exception {

    protected $sql;
    protected $dbConfig; // 当前数据库配置信息

    public function __construct($message, $code = 0, $sql = '', $dbConfig = array()) {
    $this->sql = $sql;
    $this->dbConfig = $dbConfig;
    parent::__construct($message, $code);
    }

    public function getSql() {
    return $this->sql;
    }

    public function getDbConfig() {
    return $this->dbConfig;
    }
    }

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