@在PHP中是什么意思? [英] What does @ mean in PHP?

问题描述

可能重复:
参考-此符号在PHP中是什么意思?

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Reference - What does this symbol mean in PHP?

我想知道@在PHP语言中的含义.我见过有人在使用

I was wondering what @ means in PHP language. I have seen people using

$connect = @mysql_query('sql query here');

不知道为什么.有人可以帮我解释一下吗?

Not sure why. Could someone explain it for me?

推荐答案

@运算符告诉PHP禁止显示错误消息，这样就不会显示错误消息.

The @ operator tells PHP to suppress error messages, so that they will not be shown.

例如，使用:

$result = mysql_query("this is an invalid query");

会导致显示警告，告诉您MySQL查询无效，而

would result in a warning being shown, telling you that the MySQL query is invalid, while

$result = @mysql_query("this is still an invalid query");

不会.

但是，请注意，这是非常糟糕的编程习惯，因为它不会使错误消失，而只是将它们隐藏起来，并且使调试变得更加糟糕，因为您看不到代码的实际问题.

Note, however, that this is very bad programming practice as it does not make error disappear, it just hides them, and it makes debugging a heck of a lot worse since you can't see what's actually wrong with your code.

您应该禁用>而不是@，而仅display_errors禁用 error_reporting和display_errors /errorfunc.configuration.php"rel =" noreferrer> php.ini

Instead of using @, you should disable error_reporting and display_errors just display_errors in php.ini

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