Environment

• Window 10.1
• XAMPP 7.0.9 (PHP 7.0.9)
• thinkPHP 5.0.1

Steps

# visit https://getcomposer.org/download/

> php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"

> php -r "if (hash_file('SHA384', 'composer-setup.php') === 'e115a8dc7871f15d853148a7fbac7da27d6c0030b848d9b3dc09e2a0388afed865e6a3d6b3c0fad45c48e2b5fc1196ae') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"

> php composer-setup.php

> php -r "unlink('composer-setup.php');"

# make sure you are in the root dir of thinkphp

# edit the composer.json file,

# add `"PHPOffice/PHPExcel": "1.8.*"` in the "require"

# save and exit

php composer.phar require PHPOffice/PHPExcel

# or

php composer.phar require

# to search for the package you want to install