HerokuにてPHP環境を作成する際には、Procfileにて稼働するWebサーバの設定とドキュメントルートの設定を行う。
例：apacheを使ってドキュメントルートをhtdocsにする場合
web: vendor/bin/heroku-php-apache2 htdocs
このドキュメントルートの指定を環境変数から指定することが出来た。
環境変数から取得
Procfileの中で、$を使うと環境変数から取得することが可能。
例えば、DOC_ROOTという環境変数を指定した場合は、以下のようにすれば設定出来た。
web: vendor/bin/heroku-php-apache2 $DOC_ROOT
Heroku側の環境変数に設定しやる。
$ heroku config:set DOC_ROOT=htdocs
これでappごとに環境変数を変更してやるだけで環境変数の切り替えが出来た。
ヘルプ
ちなみに、vendor/bin/heroku-php-apache2 --helpのコマンドでヘルプが確認出来た。
コマンドから実行するにはherokuコマンドで実行してやる。
$ heroku run 'vendor/bin/heroku-php-apache2 --help'
Boots PHP-FPM together with Apache2 on Heroku and for local development.
Usage:
heroku-php-apache2 [options] [<DOCUMENT_ROOT>]
Options:
-C <httpd.inc.conf> The path to the configuration file to include inside
the Apache2 VHost config (see option -c below). Will
be included inside the '<VirtualHost>' section just
after the '<Directory>' & 'ProxyPassMatch' directives.
Recommended approach when customizing Apache2's config
in most cases, unless you need to set fundamental
server level options.
[default: $COMPOSER_VENDOR_DIR/heroku/heroku-buildpack-php/conf/apache2/default_include.conf]
-c <httpd.conf> The path to the full VHost configuration file that is
included after Heroku's (or your local) Apache2 config
is loaded. Must contain a 'Listen ${PORT}' directive
and should have a '<VirtualHost>' and likely also a
'<Directory>' section (see option -C above).
[default: $COMPOSER_VENDOR_DIR/heroku/heroku-buildpack-php/conf/apache2/heroku.conf]
-F <php-fpm.inc.conf> The path to the configuration file to include at the
end of php-fpm.conf (see option -f below), in the
'[www]' pool section. Recommended approach when
customizing PHP-FPM's configuration in most cases,
unless you need to set global options.
-f <php-fpm.conf> The path to the full PHP-FPM configuration file.
[default: $COMPOSER_VENDOR_DIR/heroku/heroku-buildpack-php/conf/php/php-fpm.conf]
-h, --help Display this help screen and exit.
-i <php.ini> The path to the php.ini file to use.
[default: $COMPOSER_VENDOR_DIR/heroku/heroku-buildpack-php/conf/php/php.ini]
exist, it will be created. Wildcards are allowed, but
-l <tailme.log> Path to additional log file to tail to STDERR so its
contents appear in 'heroku logs'. If the file does not
Note: this option can be repeated multiple times.
must be quoted and must match already existing files.
-p <PORT> Port to listen on for HTTP traffic. If this argument
is not given, then the port number to use is read from
the $PORT environment variable, or a random port is
chosen if that variable does not exist.
-v, --verbose Be more verbose during startup.
All file paths must be relative to '/app'.
Any file name that ends in '.php' will be run through the PHP interpreter first.
You may use this for templating although this is less useful than e.g. for Nginx
where unlike in Apache2, you cannot reference environment variables in config
files using a '${VARNAME}' syntax.
If you would like to use the -C and -c or -F and -f options together, make sure
you retain the appropriate include mechanisms (see default configs for details).