70 lines
2.3 KiB
Markdown
70 lines
2.3 KiB
Markdown
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The ReflectionDocBlock Component [](https://travis-ci.org/phpDocumentor/ReflectionDocBlock)
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================================
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Introduction
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------------
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The ReflectionDocBlock component of phpDocumentor provides a DocBlock parser
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that is 100% compatible with the [PHPDoc standard](http://phpdoc.org/docs/latest).
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With this component, a library can provide support for annotations via DocBlocks
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or otherwise retrieve information that is embedded in a DocBlock.
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> **Note**: *this is a core component of phpDocumentor and is constantly being
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> optimized for performance.*
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Installation
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------------
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You can install the component in the following ways:
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* Use the official Github repository (https://github.com/phpDocumentor/ReflectionDocBlock)
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* Via Composer (http://packagist.org/packages/phpdocumentor/reflection-docblock)
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Usage
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-----
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In order to parse the DocBlock one needs a DocBlockFactory that can be
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instantiated using its `createInstance` factory method like this:
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```php
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$factory = \phpDocumentor\Reflection\DocBlockFactory::createInstance();
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```
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Then we can use the `create` method of the factory to interpret the DocBlock.
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Please note that it is also possible to provide a class that has the
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`getDocComment()` method, such as an object of type `ReflectionClass`, the
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create method will read that if it exists.
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```php
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$docComment = <<<DOCCOMMENT
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/**
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* This is an example of a summary.
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*
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* This is a Description. A Summary and Description are separated by either
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* two subsequent newlines (thus a whiteline in between as can be seen in this
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* example), or when the Summary ends with a dot (`.`) and some form of
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* whitespace.
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*/
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DOCCOMMENT;
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$docblock = $factory->create($docComment);
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```
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The `create` method will yield an object of type `\phpDocumentor\Reflection\DocBlock`
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whose methods can be queried as shown in the following example.
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```php
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// Should contain the summary for this DocBlock
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$summary = $docblock->getSummary();
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// Contains an object of type \phpDocumentor\Reflection\DocBlock\Description;
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// you can either cast it to string or use the render method to get a string
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// representation of the Description.
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$description = $docblock->getDescription();
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```
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> For more examples it would be best to review the scripts in the `/examples`
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> folder.
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