Analysis of @ compliance with at in PHP _ PHP-php Tutorial

When you write php code, the @ symbol is always added. do you know what it means? The following small series will share with you the role of the @ symbol. if you need it, you can refer to the @ symbol before some code lines when you are working on a PHP project. do you know what it means? Next I will share with you the function pre-added at @ in PHP.

I used it today. just remember it. In fact, it is an error control character. even if an error occurs, it ignores the error message and continues to execute the following code.

The code is as follows:

@ $ Page = $ _ GET ['Page']? Intval ($ _ GET ['Page']): 1;

This is the value of the page keyword obtained from the URL, such"Index. php? Page = 5 ",Then $ page will get 5.

But if there is an error, such"Index. php"There is no page keyword.$ _ GET ['Page']If it does not exist, an error is reported. if @ exists, you can ignore this small error.

For example:

The code is as follows:

$ Conn = mysqli_conncet ("q", "w", "e", "r ");

In this case, an error message is entered about database connection.

The code is as follows:

@ $ Conn = mysqli_conncet ("q", "w", "e", "r ");

If @ is added before $ conn, the error message will not be output.

Remember here.

The above is the function of adding at @ in front of PHP. I hope you will like it.