Как подружить Gulp и его browser-sync с PHP?

var syntax         = 'sass', // Syntax: sass or scss; 
		gulpVersion    = '4'; // Gulp version: 3 or 4 
		gmWatch        = false; // ON/OFF GraphicsMagick watching "img/_src" folder (true/false). Linux install gm: sudo apt update; sudo apt install graphicsmagick 
 
var gulp          = require('gulp'), 
		gutil         = require('gulp-util' ), 
		sass          = require('gulp-sass'), 
		browserSync   = require('browser-sync'), 
		concat        = require('gulp-concat'), 
		uglify        = require('gulp-uglify'), 
		cleancss      = require('gulp-clean-css'), 
		rename        = require('gulp-rename'), 
		autoprefixer  = require('gulp-autoprefixer'), 
		notify        = require('gulp-notify'), 
		rsync         = require('gulp-rsync'), 
		imageResize   = require('gulp-image-resize'), 
		imagemin      = require('gulp-imagemin'), 
		del           = require('del'); 
 
// Local Server 
gulp.task('browser-sync', function() { 
	browserSync({ 
		server: { 
			baseDir: 'app' 
		}, 
		notify: false, 
		// open: false, 
		// online: false, // Work Offline Without Internet Connection 
		// tunnel: true, tunnel: "projectname", // Demonstration page: http://projectname.localtunnel.me 
	}) 
}); 
 
// Sass|Scss Styles 
gulp.task('styles', function() { 
	return gulp.src('app/'+syntax+'/**/*.'+syntax+'') 
	.pipe(sass({ outputStyle: 'expanded' }).on("error", notify.onError())) 
	.pipe(rename({ suffix: '.min', prefix : '' })) 
	.pipe(autoprefixer(['last 15 versions'])) 
	.pipe(cleancss( {level: { 1: { specialComments: 0 } } })) // Opt., comment out when debugging 
	.pipe(gulp.dest('app/css')) 
	.pipe(browserSync.stream()) 
}); 
 
// JS 
gulp.task('scripts', function() { 
	return gulp.src([ 
		'app/libs/jquery/dist/jquery.min.js', 
		'app/js/common.js', // Always at the end 
		]) 
	.pipe(concat('scripts.min.js')) 
	// .pipe(uglify()) // Mifify js (opt.) 
	.pipe(gulp.dest('app/js')) 
	.pipe(browserSync.reload({ stream: true })) 
}); 
 
// HTML Live Reload 
gulp.task('code', function() { 
	return gulp.src('app/*.html') 
	.pipe(browserSync.reload({ stream: true })) 
}); 
 
// Deploy 
gulp.task('rsync', function() { 
	return gulp.src('app/**') 
	.pipe(rsync({ 
		root: 'app/', 
		hostname: 'username@yousite.com', 
		destination: 'yousite/public_html/', 
		// include: ['*.htaccess'], // Includes files to deploy 
		exclude: ['**/Thumbs.db', '**/*.DS_Store'], // Excludes files from deploy 
		recursive: true, 
		archive: true, 
		silent: false, 
		compress: true 
	})) 
}); 
 
// Images @x1 & @x2 + Compression | Required graphicsmagick (sudo apt update; sudo apt install graphicsmagick) 
gulp.task('img1x', function() { 
	return gulp.src('app/img/_src/**/*.*') 
	.pipe(imageResize({ width: '50%' })) 
	.pipe(imagemin()) 
	.pipe(gulp.dest('app/img/@1x/')) 
}); 
gulp.task('img2x', function() { 
	return gulp.src('app/img/_src/**/*.*') 
	.pipe(imageResize({ width: '100%' })) 
	.pipe(imagemin()) 
	.pipe(gulp.dest('app/img/@2x/')) 
}); 
 
// Clean @*x IMG's 
gulp.task('cleanimg', function() { 
	return del(['app/img/@*'], { force:true }) 
}); 
 
// If Gulp Version 3 
if (gulpVersion == 3) { 
 
	// Img Processing Task for Gulp 3 
	gulp.task('img', ['img1x', 'img2x']); 
	 
	var taskArr = ['styles', 'scripts', 'browser-sync']; 
	gmWatch && taskArr.unshift('img'); 
 
	gulp.task('watch', taskArr, function() { 
		gulp.watch('app/'+syntax+'/**/*.'+syntax+'', ['styles']); 
		gulp.watch(['libs/**/*.js', 'app/js/common.js'], ['scripts']); 
		gulp.watch('app/*.html', ['code']); 
		gmWatch && gulp.watch('app/img/_src/**/*', ['img']); 
	}); 
	gulp.task('default', ['watch']); 
 
}; 
 
// If Gulp Version 4 
if (gulpVersion == 4) { 
 
	// Img Processing Task for Gulp 4 
	gulp.task('img', gulp.parallel('img1x', 'img2x')); 
 
	gulp.task('watch', function() { 
		gulp.watch('app/'+syntax+'/**/*.'+syntax+'', gulp.parallel('styles')); 
		gulp.watch(['libs/**/*.js', 'app/js/common.js'], gulp.parallel('scripts')); 
		gulp.watch('app/*.html', gulp.parallel('code')); 
		gmWatch && gulp.watch('app/img/_src/**/*', gulp.parallel('img')); // GraphicsMagick watching image sources if allowed. 
	}); 
	gmWatch ? gulp.task('default', gulp.parallel('img', 'styles', 'scripts', 'browser-sync', 'watch'))  
					: gulp.task('default', gulp.parallel('styles', 'scripts', 'browser-sync', 'watch')); 
 
};