Determining the browser being used by a visitor to a website can be useful for a variety of reasons. For example, it can be used to tailor the content of the website to the specific browser or to provide different functionality depending on the browser. There are a few different ways to check the browser in PHP.
One way to check the browser is to use the `$_SERVER` variable. The `$_SERVER` variable contains information about the current request, including the browser that is being used. To get the browser information from the `$_SERVER` variable, you can use the following code: