Gulp.js + Browsersync + PHP + Ubuntu - why doesn't it work?

Question

Nginx

Hi all!
Installed the LEMP stack (nginx server) on Ubuntu, set it up, and it works.
Then I decided to install Browsersync and run it through Gulp.js, tracking changes in PHP files.
Does not track changes in PHP files. How to fix it?
Here is the contents of the gulpfile.js file:

var gulp = require('gulp');
var browserSync = require('browser-sync');
var reload = browserSync.reload;
var paths = {
   php:['./**/*.php']
};
 
gulp.task('php', function(){
  return gulp.src(paths.php)
  .pipe(reload({stream:true}));
});
 
gulp.task('browserSync', function() {
  browserSync({
    proxy: 'project.org'
  });
});
 
gulp.task('watch', function() {
   gulp.watch(paths.php, ['php']);
});
 
gulp.task('default', ['watch', 'browserSync']);

Answer 1

The solution was to simply add after the body tag

<script>
  //<![CDATA[
      document.write("<script async src='/browser-sync/browser-sync-client.js?v=2.17.5'><\/script>".replace("HOST", location.hostname));
  //]]>
  </script>

There are also alternative options:
https://browsersync.io/docs#requirements
https://browsersync.io/docs/options/#option-snippe...