I am new to web programming and at the moment I am developing a web application with the Slim framework. I have a script that takes 10-20 second to execute when triggered by a user. What I noticed is that while running the script I can not connect to the server (localhost) using another browser tab. Is the php server (the "integrated" one ,not apache or etc.) multi threaded or I have written my script the wrong way ?
Thanks for your answers!
