The meaning of @ character in php

Question

I am a newbie in PHP.

I do not know the meaning of @, for example:

$key = @$_REQUEST['key'];

I have searched in google but can not find anything.

Some help me! Please !

Answer 1

The @ symbol tells the function to fail silently instead of dumping some sort of error message. It is listed under error control operators in the PHP manual.

Answer 2

It suppresses any errors that the line would normally produce. In this case if the key doesn't exist, an error will occur but the error text will be silenced.

Answer 3

It suppresses errors and warnings.

Answer 4

You've found the error control operator!

Answer 5

It suppresses warnings in PHP. In that example it could be used to suppress and undefined index warning, if $_REQUEST['key'] doesn't exist. It's usually better practice to write:

$key = isset($_REQUEST['key']) ? $_REQUEST['key'] : 'default value for key here';