How to quote sweet Alert in PHP

Find a nice alternative to alert plug-in Sweet alert
http://tristanedwards.me/sweetalert/
But I don't know how to refer to him correctly in my php file.
My page is not written to HTML tags, only php files.
You will need to replace alert with Sweetalert in the middle of the current line of code:
if ($_post[' A ']== "username" | | $_post[' ar]== "")
{

echo "";
Exit
}


Ask how it should be done

Reply to discussion (solution)

First download his package and put it on your website, in PHP the same echo introduced the code, and then replace the alert with Sweetalert

First download his package and put it on your website, in PHP the same echo introduced the code, and then replace the alert with Sweetalert

It's weird, I tried, no, yes.

