php如何捕获所有未处理异常_php设置顶层异常处理器与日志记录策略

function handleUncaughtException($exception) {
    // 记录异常信息到日志
    error\_log(
        "Uncaught Exception: " . $exception->getMessage() . "\n" .
        "File: " . $exception->getFile() . "\n" .
        "Line: " . $exception->getLine() . "\n" .
        "Trace:\n" . $exception->getTraceAsString(),
        3,
        "/var/log/php-app.log"
    );

    // 向用户显示友好提示（生产环境）
    if (php\_sapi\_name() === 'cli') {
        echo "Error: An unhandled exception occurred.\n";
    } else {
        http\_response\_code(500);
        echo "<h1>系统繁忙，请稍后再试</h1>";
    }
}

// 注册处理器
set\_exception\_handler('handleUncaughtException');

function handleError($severity, $message, $file, $line) {
    if (!(error\_reporting() & $severity)) {
        return;
    }
    throw new ErrorException($message, 0, $severity, $file, $line);
}

set\_error\_handler('handleError');

// 恢复默认处理器
restore\_exception\_handler();