An introduction to the function of adding at symbol @ before PHP

PHP before adding the at symbol @ function of the relevant introduction, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.

The copy code is as follows:

@ $page=$_GET ['page']? intval ($_ GET [' page']): 1

This is to get the value of the page keyword from URL. For example, "index.php?page=5", $page will get 5.

But if there is an error, for example, there is no page keyword after "index.php", if the $_ GET ['page'] does not exist, an error will be reported, and @ can ignore this small error.

Another example is:

The copy code is as follows:

$conn = mysqli_conncet ("Q", "w", "e", "r")

This will enter an error message about connecting to the database.

The copy code is as follows:

@ $conn = mysqli_conncet ("Q", "w", "e", "r")

If you precede $conn with @, you can prevent him from outputting error messages.

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