1、下載穩定版本 composer.phar 1.10.8 至 php 安裝目錄（即與 php.ini 同級）
2、在 composer.phar 同目錄下 新建 composer.bat 文件，用記事本打開並輸入
@php "%~dp0composer.phar" %*
3、配置 composer !!! 由於安裝了 php5.6 以及 php7.3 ，須指定 php.exe，以下操作皆在 php7.3 下運行 !!!
# 查看 全局配置 ./php.exe ./composer.phar config -g -l # 重置 源 ./php.exe ./composer.phar config -g --unset repositories.packagist # 設置 阿里雲源 ./php.exe ./composer.phar config -g repositories.packagist composer https://mirrors.aliyun.com/composer/ # 禁用 https 連接 ./php.exe ./composer.phar config -g secure-http false # 運行 診斷命令 ./php.exe ./composer.phar diagnose Checking platform settings: OK Checking git settings: OK Checking http connectivity to packagist: OK Checking https connectivity to packagist: OK Checking github.com rate limit: OK Checking disk free space: OK Checking pubkeys: FAIL Missing pubkey for tags verification Missing pubkey for dev verification Run composer self-update --update-keys to set them up Checking composer version: OK Composer version: 1.10.8 PHP version: 7.3.11 PHP binary path: E:\php7.3\php.exe OpenSSL version: OpenSSL 1.1.1d 10 Sep 2019 #配置 pubkey，按提示打開頁面並輸入兩次 pubkey ./php.exe ./composer.phar self-update --update-keys # 再次運行診斷命令 ./php.exe ./composer.phar diagnose Checking platform settings: OK Checking git settings: OK Checking http connectivity to packagist: OK Checking https connectivity to packagist: OK Checking github.com rate limit: OK Checking disk free space: OK Checking pubkeys: Tags Public Key Fingerprint: 57815BA2 7E54DC31 7ECC7CC5 573090D0 87719BA6 8F3BB723 4E5D42D0 84A14642 Dev Public Key Fingerprint: 4AC45767 E5EC2265 2F0C1167 CBBB8A2B 0C708369 153E328C AD90147D AFE50952 OK Checking composer version: OK Composer version: 1.10.8 PHP version: 7.3.11 PHP binary path: E:\php7.3\php.exe OpenSSL version: OpenSSL 1.1.1d 10 Sep 2019
4、利用 composer 安裝 laravel 7
./php.exe ./composer.phar create-project laravel/laravel /e/Apache/htdocs/laravel/ ... Writing lock file Generating optimized autoload files > Illuminate\Foundation\ComposerScripts::postAutoloadDump > @php artisan package:discover --ansi Discovered Package: facade/ignition Discovered Package: fideloper/proxy Discovered Package: fruitcake/laravel-cors Discovered Package: laravel/tinker Discovered Package: nesbot/carbon Discovered Package: nunomaduro/collision Package manifest generated successfully. 44 packages you are using are looking for funding. Use the `composer fund` command to find out more! > @php artisan key:generate --ansi Application key set successfully.