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https://github.com/phpenv/phpenv

Simple PHP version management
https://github.com/phpenv/phpenv

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Simple PHP version management

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## phpenv - PHP multi-version installation and management for humans.



### Key features:



My name is phpenv. I was designed for humans, to help simplify the management

of multiple PHP custom build installations.



I was originally inspired by the outstanding work of both the

 projects which

you already know and love with a whole bunch of PHP centric additions

to help you build your first release, simplify managing and working

with diffirent releases and keep you building new release after new

release like there's nothing to it.



You are a PHP developer, like we are, and you not only have to have the

latest and freshest interpreter to spin your scripts but you also care to

see what how they get treated when submitted to older interpretations.

Ever wondered why you can't run a PHP app on your own development machine? Well

you just found the answer doing when taken for a ride building PHP

on their dev machines. Easily customize your configuration options and even

build pecl extensions into PHP or manually afterwards. Configure and install

custom builds of the same PHP release version directly from the PHP source

code repository kept in your local `.phpenv` folder.



## How It Works



phpenv operates on the per-user directory `~/.phpenv`. Version names in

phpenv correspond to subdirectories of `~/.phpenv/versions`. For

example, you might have `~/.phpenv/versions/5.3.8` and

`~/.phpenv/versions/5.4.0`.



Each version is a working tree with its own binaries, like

`~/.phpenv/versions/5.4.0/bin/php` and

`~/.phpenv/versions/5.3.8/bin/pyrus`. phpenv makes _shim binaries_

for every such binary across all installed versions of PHP.



These shims are simple wrapper scripts that live in `~/.phpenv/shims`

and detect which PHP version you want to use. They insert the

directory for the selected version at the beginning of your `$PATH`

and then execute the corresponding binary.



Because of the simplicity of the shim approach, all you need to use

phpenv is `~/.phpenv/shims` in your `$PATH` which will do the version

switching automagically.



## Installation



### Basic GitHub Checkout

For a more automated install, you can use [phpenv-installer][phpenv-installer-url].

If you prefer a manual approach, follow the steps below.



This will get you going with the latest version of phpenv and make it

easy to fork and contribute any changes back upstream.



1. Check out phpenv into `~/.phpenv`.



        $ git clone [email protected]:phpenv/phpenv.git ~/.phpenv



2. Add `~/.phpenv/bin` to your `$PATH` for access to the `phpenv`

   command-line utility.



        $ echo 'export PATH="$HOME/.phpenv/bin:$PATH"' >> ~/.bash_profile



3. Add phpenv init to your shell to enable shims and autocompletion.



        $ echo 'eval "$(phpenv init -)"' >> ~/.bash_profile



4. Restart your shell so the path changes take effect. You can now

   begin using phpenv.



        $ exec $SHELL -l



5. (Optional) Install php-build into it and any php. (See [php-build][php-build-url] home)



        $ git clone https://github.com/php-build/php-build $(phpenv root)/plugins/php-build

        $ phpenv install [any php version]



6. (Optional) Rebuild the shim binaries. You should do this any time you install

   a new PHP binary.



        $ phpenv rehash



### Upgrading



If you've installed phpenv using the instructions above, you can

upgrade your installation at any time using git.



To upgrade to the latest development version of phpenv, use `git pull`:



    $ cd ~/.phpenv

    $ git pull



### php-build configuration

By default, php-build will compile PHP with a default set of options specified by:

 - php-build [default configure options](https://github.com/php-build/php-build/blob/master/share/php-build/default_configure_options)

 - per-version configure options in the PHP build definition. For example, in [7.4.13](https://github.com/php-build/php-build/blob/master/share/php-build/definitions/7.4.13)

 - configure options specified in environment variables. See [the man page](https://github.com/php-build/php-build/blob/master/man/php-build.1.ronn) for details.



Typically, if you need to specify how PHP is built on your system, you can add configure options in the `PHP_BUILD_CONFIGURE_OPTS` variable, and add PHP extensions in the `PHP_BUILD_INSTALL_EXTENSION` variable.



### Webserver Setup

#### PHP-FPM

The preferred way of connecting phpenv applications is by using php-fpm after building php. Your webserver can then be configured to connect to the php-fpm instance. In this approach, php will run as the permissions of the invoking user, which is not necessarily as the web server.



php-fpm can be started in one of the following ways:

 - using an init script: by running `~/.phpenv/versions/$VERSION/etc/init.d/php-fpm`

 - using systemd: by installing `~/.phpenv/versions/$VERSION/etc/systemd/system/php-fpm.service`

 - using an init script: by writing your own custom init script

 - using systemd: by writing your own custom systemd unit

 - manually: by running `php-fpm (8)` and supplying command-line arguments



By default, php-fpm comes with a configuration file under `~/.phpenv/versions/$VERSION/etc/php-fpm.conf`, which it will look for when run. This configures php-fpm to listen on `localhost:9000` when started. You may edit or replace this file, or supply a different configuration file using the `--fpm-config` (`-y`) command line argument.



Instructions for connecting different webservers to php-fpm:

 - for Apache, see the [apache wiki article][apache-wiki-phpfpm]

 - for NGINX, see the [nginx wiki article][nginx-wiki-phpfpm]



#### Apache SAPI

Alternatively, you may still use the Apache php module by configuring [php-build][php-build-url] to build the libphp.so apache extension (directions to follow). libphp.so can then be found by apache under the `~/.phpenv/versions/$VERSION/libexec` folder. This file can be used for Apache's `LoadModule php5_module` directive and requires Apache to restart when changed.



### Neckbeard Configuration



Skip this section unless you must know what every line in your shell

profile is doing.



`phpenv init` is the only command that crosses the line of loading

extra commands into your shell. Here's what `phpenv init` actually does:



1. Sets up your shims path. This is the only requirement for phpenv to

   function properly. You could also do this by hand by prepending

   `~/.phpenv/shims` to your `$PATH`.



2. Installs autocompletion. This is entirely optional but pretty

   useful. Sourcing `~/.phpenv/completions/phpenv.bash` will set that

   up. There is also a `~/.phpenv/completions/phpenv.zsh` for Zsh

   users.



3. Rehashes shims. From time to time you'll need to rebuild your

   shim files. Doing this on init makes sure everything is up to

   date. You can always run `phpenv rehash` manually.



4. Installs the sh dispatcher. This bit is also optional, but allows

   phpenv and plugins to change variables in your current shell, making

   commands like `phpenv shell` possible. The sh dispatcher doesn't do

   anything crazy like override `cd` or hack your shell prompt, but if

   for some reason you need `phpenv` to be a real script rather than a

   shell function, you can safely skip it.



Run `phpenv init -` for yourself to see exactly what happens under the

hood.



## Usage



Like `git`, the `phpenv` command delegates to subcommands based on its

first argument. The most common subcommands are:



### phpenv help



Show the usage and useful help.  When you are in trouble, do this ;)



    $ phpenv help

    $ phpenv help 



### phpenv install



[php-build][php-build-url] is a phpenv-compatible plugin that builds and installs php. To be able to use phpenv install, download and install the php-build plugin as described in step 5. of the install instructions above.



Before running phpenv install, make sure the development versions needed to build php are installed in your system. In particular, if you want to build the apache extension, make sure that apache2-dev (or your OS's equivalent) is installed.



### phpenv global



Sets the global version of PHP to be used in all shells by writing

the version name to the `~/.phpenv/version` file. This version can be

overridden by a per-project `.phpenv-version` file, or by setting the

`PHPENV_VERSION` environment variable.



    $ phpenv global 5.4.0



The special version name `system` tells phpenv to use the system PHP

(detected by searching your `$PATH`).



When run without a version number, `phpenv global` reports the

currently configured global version.



### phpenv local



Sets a local per-project PHP version by writing the version name to

a `.phpenv-version` file in the current directory. This version

overrides the global, and can be overridden itself by setting the

`PHPENV_VERSION` environment variable or with the `phpenv shell`

command.



    $ phpenv local 5.3.8



When run without a version number, `phpenv local` reports the currently

configured local version. You can also unset the local version:



    $ phpenv local --unset



### phpenv shell



Sets a shell-specific PHP version by setting the `PHPENV_VERSION`

environment variable in your shell. This version overrides both

project-specific versions and the global version.



    $ phpenv shell 5.3.9



When run without a version number, `phpenv shell` reports the current

value of `PHPENV_VERSION`. You can also unset the shell version:



    $ phpenv shell --unset



Note that you'll need phpenv's shell integration enabled (step 3 of

the installation instructions) in order to use this command. If you

prefer not to use shell integration, you may simply set the

`PHPENV_VERSION` variable yourself:



    $ export PHPENV_VERSION=5.3.13



### phpenv versions



Lists all PHP versions known to phpenv, and shows an asterisk next to

the currently active version.



    $ phpenv versions

      5.2.8

      5.3.13

    * 5.4.0 (set by /YOUR-USERNAME/.phpenv/global)



### phpenv version



Displays the currently active PHP version, along with information on

how it was set.



    $ phpenv version

    5.4.0 (set by /YOUR-USERNAME/.phpenv/version)



### phpenv rehash



Installs shims for all PHP binaries known to phpenv (i.e.,

`~/.phpenv/versions/*/bin/*`). Run this command after you install a new

version of PHP.



    $ phpenv rehash



### phpenv which



Displays the full path to the binary that phpenv will execute when you

run the given command.



    $ phpenv which pyrus

    /YOUR-USERNAME/.phpenv/versions/5.4.0/bin/pyrus



## Development



The phpenv source code is [hosted on

GitHub][phpenv-url]. It's clean, modular,

and easy to understand (thanks to the rbenv project), even if you're not a

shell hacker.



This project is basically a clone (Read: "search and replace") of the rbenv

project. It's in need of love and support. If you're interested in improving it

please feel free to fork, submit [pull requests][phpenv-prs] and file bugs on the [issue

tracker][phpenv-issues].



### License



(The MIT license)



Copyright (c) 2012 Dominic Giglio\

Copyright (c) 2013 Nick Lombard\

Copyright (c) 2015 madumlao



Permission is hereby granted, free of charge, to any person obtaining

a copy of this software and associated documentation files (the

"Software"), to deal in the Software without restriction, including

without limitation the rights to use, copy, modify, merge, publish,

distribute, sublicense, and/or sell copies of the Software, and to

permit persons to whom the Software is furnished to do so, subject to

the following conditions:



The above copyright notice and this permission notice shall be

included in all copies or substantial portions of the Software.



THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.



[original-url]: https://github.com/phpenv/phpenv

[php-build-url]: https://github.com/php-build/php-build

[phpenv-url]: https://github.com/phpenv/phpenv

[phpenv-issues]: https://github.com/phpenv/phpenv/issues

[phpenv-installer-url]: https://github.com/phpenv/phpenv-installer

[phpenv-prs]: https://github.com/phpenv/phpenv/pulls

[apache-wiki-phpfpm]: https://wiki.apache.org/httpd/PHP-FPM

[nginx-wiki-phpfpm]: https://www.nginx.com/resources/wiki/start/topics/examples/phpfcgi/