一个显示效果非常不错的PHP错误、异常处理类

// 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 = '<b>' . $message . '</b><br /><b>PHP:</b>' . $logTrace;
   self::writeErrorLog($messageSave);
  }

if ($show) {
   self::showError('system', "<li>$message</li>", $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 .= '<li>[Line: ' . $error['line'] . ']' . $file . '(' . $func . ')</li>';
   $log .= !empty($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 .= '<div>';
    $errorMsg .= self::sqlClear($exception->getSql(), $exception->getDbConfig());
    $errorMsg .= '</div>';
   }
  } 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('', 'https://www.jb51.net/'), $error['file']), 'line' => $error['line'], 'function' => $error['function']);
  }
  self::showError($type, $errorMsg, $phpMsg);
  exit();
 }