解决Composer should be invoked via the CLI version o
在运行的PHP FastCGI 环境中安装Composer时，遇到这个问题： drupalon@ lixiphp .com [~/public_html/demo/gitlist]# php composer.phar install Content-type: text/html Warning: Composer should be invoked via the CLI version of PHP, not the cgi-fcg
在运行的PHP FastCGI 环境中安装Composer时，遇到这个问题：
drupalon@lixiphp.com [~/public_html/demo/gitlist]# php composer.phar install
Content-type: text/htmlWarning: Composer should be invoked via the CLI version of PHP, not the cgi-fcgi SAPI
Fatal error: Uncaught exception ‘ErrorException’ with message ‘Undefined index: argv’ in phar:///home5/drupalon/public_html/demo/gitlist/composer.phar/vendor/symfony/console/Symfony/Component/Console/Input/ArgvInput.php:57
Stack trace:
#0 phar:///home5/drupalon/public_html/demo/gitlist/composer.phar/vendor/symfony/console/Symfony/Component/Console/Input/ArgvInput.php(57): Composer\Util\ErrorHandler::handle(8, ‘Undefined index…’, ‘phar:///home5/d…’, 57, Array)
#1 phar:///home5/drupalon/public_html/demo/gitlist/composer.phar/vendor/symfony/console/Symfony/Component/Console/Application.php(111): Symfony\Component\Console\Input\ArgvInput->__construct()
#2 phar:///home5/drupalon/public_html/demo/gitlist/composer.phar/src/Composer/Console/Application.php(83): Symfony\Component\Console\Application->run(NULL, Object(Symfony\Component\Console\Output\ConsoleOutput))
#3 phar:///home5/drupalon/public_html/demo/gitlist/composer.phar/bin/composer(43): Composer\Console\Application->run()
#4 /home5/drupalon/public_html/demo/gitlist/c in phar:///home5/drupalon/public_html/demo/gitlist/composer.phar/vendor/symfony/console/Symfony/Component/Console/Input/ArgvInput.php on line 57
错误提示PHP Composer 无法在CGI/FastCGI 中安装，需要切换到 CLI 模式下安装。
Composer 解决方法
Symfony Fatal error: Uncaught exception ‘ErrorException’ with message ‘Undefined index: argv’ in Symfony/Component/Console/Input/ArgvInput.php:57
设置php.ini为以下值：
register_argc_argv=On
或者直接通过PHP CGI 命令行安装 Composer：
# curl -sS https://getcomposer.org/installer | php-cli
注意：PHP CLI 模式下默认register_argc_argv=On。
安装结果：
#!/usr/bin/env php
All settings correct for using Composer
Downloading…Composer successfully installed to: /home5/drupalon/public_html/demo/gitlist/composer.phar
Use it: php composer.phar
查看Composer是否安装成功：
# php-cli composer.phar -V
Composer version 7b72ce1b51ea075911226bf604625fed82399559
(...)
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