PHP未定义常量PHP_ROUND_HALF_DOWN [英] PHP Undefined Constant PHP_ROUND_HALF_DOWN

问题描述

我正在处理的项目中有一些PHP代码，该代码使用PHP的round函数。在我的本地主机上，我的mode参数周围没有任何引号，仅表示为PHP_ROUND_HALF_DOWN。但是，当推送到我的服务器时，我收到错误消息：

I have some PHP code in a project I'm working on that uses PHP's round function. On my localhost, I don't include any quotes around my mode argument, stating it as just PHP_ROUND_HALF_DOWN. However, when pushing to my server I get the error message:

Use of undefined constant PHP_ROUND_HALF_DOWN - assumed 'PHP_ROUND_HALF_DOWN'
Warning (2): Wrong parameter count for round() [APP/views/helpers/time_left.php, line 14]

现在，当我将单引号添加到mode参数时，第一个错误消失了，但是仍然存在错误的参数计数。我按如下方式调用该函数：

Now, when I add the single quotes to the mode argument, the first error goes away, however the "wrong parameter count" remains. I'm calling the function as follows:

$days = round(($difference/$day), 0, PHP_ROUND_HALF_DOWN);

感谢所有帮助！

推荐答案

PHP 5.3中添加了取整模式。 。确保您至少运行该版本。

The rounding mode was added in PHP 5.3. Make sure you're running at least that version.

通过在PHP文件中放置以下内容，可以查看正在运行的版本：

You can see which version you're running by placing the following in a PHP file:

var_dump(phpversion());

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