Is there any way to open a new window or new tab using PHP without using JavaScript.
Short answer: No.
PHP is a server side language (at least in the context of web development). It has absolutely no control over the client side, i.e. the browser.
No. PHP is a server-side language, meaning that it is completely done with its work before the browser has even started rendering the page. You need to use Javascript.
Nope, a window can only be opening by adding target="_blank" attribute (invalid in Strict (X)HTML) or using JavaSript's window.open(url '_blank').
PHP runs server side - therefore it can generate the HTML or JavaScript, but it can't directly interact with the client.
PHP is a server-side language, it's what produces all the code you see on a page when you choose View Source. PHP cannot affect the client on its own, it needs to do it through a language such as JavaScript.
PHP is server-side, as everyone states, however you can add a target="_blank" attribute to your form tag. This doesn't perform any work server side, but does let you submit the form to a new window to be processed on the server.
A neat trick, but 1) deprecated in HTML Strict and 2) rarely useful.