When changing php files, the message "Reloading Browsers ..." is displayed, but the browser is not updated. When you change the files html, js, sass, the browser is updated regularly. Tell me, please, what could be the problem. 
var gulp = require('gulp'); var bs=require('browser-sync').create(); var sass = require('gulp-sass'); var gutil = require( 'gulp-util' ); var ftp = require( 'vinyl-ftp' ); var autoprefixer = require('gulp-autoprefixer'); var csso = require('gulp-csso'); gulp.task('server', ['sass'], function() { bs.init({ // server: "../" proxy: "site", notify: false }); gulp.watch("../src/sass/*.sass", ['sass']); // gulp.watch("../*.html").on('change', bs.reload); gulp.watch("../*.php").on('change', bs.reload); gulp.watch("../src/js/*.js").on('change', bs.reload); }); gulp.task('sass', function() { return gulp.src("../src/sass/style.sass") .pipe(sass()) .pipe(csso()) .pipe(autoprefixer({ browsers: ['last 2 versions'], })) .pipe(gulp.dest("../src/css")) .pipe(bs.stream()); }); gulp.task('default', ['server']); 