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1 # Version
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2
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3 **Version** is a library that helps with managing the version number of Git-hosted PHP projects.
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4
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5 ## Installation
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6
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7 You can add this library as a local, per-project dependency to your project using [Composer](https://getcomposer.org/):
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8
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9 composer require sebastian/version
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10
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11 If you only need this library during development, for instance to run your project's test suite, then you should add it as a development-time dependency:
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12
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13 composer require --dev sebastian/version
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14
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15 ## Usage
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16
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17 The constructor of the `SebastianBergmann\Version` class expects two parameters:
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18
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19 * `$release` is the version number of the latest release (`X.Y.Z`, for instance) or the name of the release series (`X.Y`) when no release has been made from that branch / for that release series yet.
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20 * `$path` is the path to the directory (or a subdirectory thereof) where the sourcecode of the project can be found. Simply passing `__DIR__` here usually suffices.
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21
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22 Apart from the constructor, the `SebastianBergmann\Version` class has a single public method: `getVersion()`.
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23
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24 Here is a contrived example that shows the basic usage:
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25
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26 <?php
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27 $version = new SebastianBergmann\Version(
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28 '3.7.10', '/usr/local/src/phpunit'
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29 );
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30
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31 var_dump($version->getVersion());
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32 ?>
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33
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34 string(18) "3.7.10-17-g00f3408"
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35
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36 When a new release is prepared, the string that is passed to the constructor as the first argument needs to be updated.
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37
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38 ### How SebastianBergmann\Version::getVersion() works
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39
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40 * If `$path` is not (part of) a Git repository and `$release` is in `X.Y.Z` format then `$release` is returned as-is.
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41 * If `$path` is not (part of) a Git repository and `$release` is in `X.Y` format then `$release` is returned suffixed with `-dev`.
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42 * If `$path` is (part of) a Git repository and `$release` is in `X.Y.Z` format then the output of `git describe --tags` is returned as-is.
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43 * If `$path` is (part of) a Git repository and `$release` is in `X.Y` format then a string is returned that begins with `X.Y` and ends with information from `git describe --tags`.
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