在laravel项目根目录下，创建一个ant.php，将下面的内容复制进去：

<?php

/**
 * 说明：获取文件
 *
 * @param $dir
 * @return array
 * @author scort
 */
function getFile($dir) {
    $handler = opendir($dir);
    while (($filename = readdir($handler)) !== false) {//务必使用!==，防止目录下出现类似文件名“0”等情况
        if ($filename != "." && $filename != "..") {
            $files[] = $filename ;
        }
    }

    closedir($handler);

    return $files;
}

//获取某目录下所有文件、目录名（不包括子目录下文件、目录名）
$cssFiles = getFile('./resources/assets/css/');
$jsFiles = getFile('./resources/assets/js/');

$info = "var elixir = require('laravel-elixir');\n";

$info .=<<<EOF

    /*
     |--------------------------------------------------------------------------
     | Elixir Asset Management
     |--------------------------------------------------------------------------
     |
     | Elixir provides a clean, fluent API for defining some basic Gulp tasks
     | for your Laravel application. By default, we are compiling the Sass
     | file for our application, as well as publishing vendor resources.
     |
     */

EOF;


$info .= "elixir(function(mix) {\n";

//打印所有文件名
foreach ($cssFiles as $value) {
    $info .= "\tmix.styles('{$value}', 'public/build/css');\n";
}

foreach ($jsFiles as $value) {
    $info .= "\tmix.scripts('{$value}', 'public/build/js');\n";
}

$info .= '});';

file_put_contents('gulpfile.js', $info);
system('gulp --production');

运行：

php ant.php