PHP functions and @functions

Basically, I've seen people using @ before their function calls, not for every function, but for some kind of extension functions like file_get_contents() , mysql_connect() and so on.

And yes, the question is: For what purpose are there these @ s before function calls?

Or in other words, what is the difference between @file_get_contents() and file_get_contents() ?

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@ is an error control operator. Basically it's suppressing errors.

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这是PHP的error control operator用于抑制函数调用产生的任何错误。

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@function不会在其HTML输出中显示任何错误消息，而常规函数调用将会发生。

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