Since code playground doesn't have PHP's 'readline' function, how can I get input from user?

Question

In command line's PHP, the normal way to get input is to use the 'readline' function (e.g., "$var = readline('Type something: ');"). SoloLearn's code playground doesn't recognize that function though. There's any other way to get user input purely in PHP? If not purely, how's the simplest way to do it?

Answer 1

In the real world PHP script reads $_GET or $_POST superglobals to get an input when a user submits an HTML form.
https://www.sololearn.com/learn/PHP/1841/

Answer 2

Yeah... I know... (though command line php scripts are real too :P ). But I was looking for a solution specifically for the code playground and, unlike the web option that there's a tab for html, javascript and css, php has only the code and the output...