GULP的新功能-是否有必要将所有文件从src目录复制到项目的dist目录?

我已经使用GULP 4一周多了，以前从未使用过. 下面的代码是我已经玩了一周的代码，以便它将完成我所要求的工作. 我的问题是，是否有必要将项目中的每个文件从src复制到dist目录，尤其是在更改时，因为我有60多个php文件，并且在更改时更新每个php文件并不能使我感到效率高. 首先，有必要在更改时将所有项目文件从src复制到dist. 其次，有没有一种方法可以只更新src目录中已修改的一个文件? 过去，我没有考虑使用自动工具，例如GULP.重点是在开发过程中使用此类工具以节省时间，以及有助于该原因的其他好处. 作为初学者，将需要一些时间来欣赏这些好处. 您可能会对我给出的代码进行任何改进，我们将不胜感激. 亲切的问候

I have been using GULP 4 for little over a week now and have never used it before. The code below is what I have been playing around with for a week now, so that it will do the job I have asked of it. My question, is it necessary to copy every file in a project from the src to dist directory, especially on change, as I have over 60 php files, and to update every php file on change does not strike me as being efficient. First, is necessary to copy all project files from the src to dist on change. Second, is there a way to just update the one file that has been modified in the src directory? In the past I haven't looked at using automated tools such as GULP, however; the emphasis is on using such tools in the development process to save time, along with other benefits that help the cause. As a beginner, it is going to take some time to appreciate these benefits. Any improvements that you may see with respect with the code I have given would be much appreciated. Kindest Regards

const gulp = require('gulp');
const php = require('gulp-connect-php');
const sass = require('gulp-sass');
const uglify = require('gulp-uglify');
const lineec = require('gulp-line-ending-corrector');
const browserSync = require('browser-sync').create();

const styleSRC = './src/scss/**/*.scss';
const styleDIST = './dist/css';

const jsSRC = 'src/js/**/*.js';
const jsDIST = './dist/js';

const phpSRC = 'src/php/**/*.php';
const phpDIST = './dist/php';

const htmlSRC = 'src/html/**/*.html';
const htmlDIST = './dist/html';

function style()
{
    return gulp.src(styleSRC)
    .pipe(sass({outputStyle: 'compressed'}).on('error', sass.logError))
    .pipe(gulp.dest(styleDIST))
    .pipe(browserSync.stream());
}

function javascript() {
    return gulp.src(jsSRC)
    .pipe(uglify())
    .pipe(lineec())
    .pipe(gulp.dest(jsDIST));
  }

  function phpscript() {
    return gulp.src(phpSRC)
    .pipe(gulp.dest(phpDIST));
  }

function server()
{
    php.server({base:'./src/php', port:8010, keepalive:true});
}

function sync()
{
    browserSync.init({
        proxy: "http://lansdownelions/src/php/login.php",
        baseDir: './src/php',
        open: true,
        notify: false
    });
}

function watch()
{
    gulp.watch(styleSRC, style);
    gulp.watch(jsSRC, javascript);
    gulp.watch(jsSRC).on('change', browserSync.reload);
    gulp.watch(phpSRC, phpscript);
    gulp.watch(phpSRC).on('change', browserSync.reload);
    gulp.watch(htmlSRC).on('change', browserSync.reload);
}

exports.style = style;
exports.javascript = javascript;
exports.phpscript = phpscript;
exports.server = server;
exports.sync = sync;
exports.watch = watch;

var build = gulp.parallel(style, javascript, phpscript, sync, server, watch);
gulp.task('default', build);