property-info
Extracts information about PHP class' properties using metadata of popular sources
Top Related Projects
Annotations Docblock Parser
Library for (de-)serializing data of any complexity (supports JSON, and XML)
Provides tools to validate values
Allows to easily create, process and reuse HTML forms
Quick Overview
The symfony/property-info component is part of the Symfony framework, designed to extract information about class properties. It provides a unified way to retrieve property types, descriptions, and other metadata across different sources such as PHP DocBlocks, type declarations, and Symfony validation annotations.
Pros
- Offers a consistent API for property information extraction
- Supports multiple sources for property metadata
- Integrates seamlessly with other Symfony components
- Extensible through custom extractors
Cons
- Requires additional setup for optimal functionality
- May have performance overhead for large-scale applications
- Limited usefulness outside of the Symfony ecosystem
- Learning curve for developers new to Symfony
Code Examples
- Basic usage to get property type:
use Symfony\Component\PropertyInfo\PropertyInfoExtractor;
$propertyInfo = new PropertyInfoExtractor();
$type = $propertyInfo->getTypes(User::class, 'email');
echo $type[0]->getBuiltinType(); // Outputs: string
- Retrieving property description:
$propertyInfo = new PropertyInfoExtractor();
$description = $propertyInfo->getShortDescription(Product::class, 'price');
echo $description; // Outputs: The price of the product
- Checking if a property is readable/writable:
$propertyInfo = new PropertyInfoExtractor();
$isReadable = $propertyInfo->isReadable(Order::class, 'total');
$isWritable = $propertyInfo->isWritable(Order::class, 'total');
echo $isReadable ? 'Readable' : 'Not readable';
echo $isWritable ? 'Writable' : 'Not writable';
Getting Started
To use symfony/property-info in your project:
-
Install the component via Composer:
composer require symfony/property-info
-
Create a PropertyInfoExtractor instance:
use Symfony\Component\PropertyInfo\PropertyInfoExtractor; use Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor; $reflectionExtractor = new ReflectionExtractor(); $propertyInfo = new PropertyInfoExtractor( [$reflectionExtractor], [$reflectionExtractor], [$reflectionExtractor], [$reflectionExtractor] );
-
Use the extractor to retrieve property information:
$types = $propertyInfo->getTypes(MyClass::class, 'myProperty'); $description = $propertyInfo->getShortDescription(MyClass::class, 'myProperty');
Competitor Comparisons
Annotations Docblock Parser
Pros of Annotations
- More widely adopted and used in various PHP frameworks
- Provides a simple way to add metadata directly in PHP docblocks
- Supports custom annotations for extended functionality
Cons of Annotations
- Requires parsing of docblocks, which can impact performance
- Tightly couples metadata to the code, potentially making refactoring more challenging
- May lead to cluttered and less readable code in complex scenarios
Code Comparison
Annotations:
/**
* @ORM\Entity
* @ORM\Table(name="users")
*/
class User {
/** @ORM\Id @ORM\Column(type="integer") */
private $id;
}
Property-Info:
use Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor;
$reflectionExtractor = new ReflectionExtractor();
$properties = $reflectionExtractor->getProperties(User::class);
Property-Info focuses on extracting information about properties using reflection, while Annotations allows for adding metadata directly in docblocks. Property-Info is part of the Symfony ecosystem and integrates well with other Symfony components, whereas Annotations is more framework-agnostic and widely used across different PHP projects.
Library for (de-)serializing data of any complexity (supports JSON, and XML)
Pros of Serializer
- More comprehensive serialization/deserialization capabilities
- Supports multiple formats (JSON, XML, YAML)
- Extensive configuration options for fine-grained control
Cons of Serializer
- Steeper learning curve due to more complex API
- Heavier dependency with more code to maintain
- May be overkill for simple serialization needs
Code Comparison
Serializer:
$serializer = JMS\Serializer\SerializerBuilder::create()->build();
$jsonContent = $serializer->serialize($object, 'json');
$object = $serializer->deserialize($jsonContent, 'MyNamespace\MyClass', 'json');
Property-info:
$propertyInfo = new PropertyInfoExtractor([new ReflectionExtractor()]);
$properties = $propertyInfo->getProperties($className);
$type = $propertyInfo->getTypes($className, $propertyName)[0];
Key Differences
- Serializer focuses on object serialization/deserialization
- Property-info provides metadata about class properties
- Serializer offers more features but is more complex
- Property-info is lightweight and integrates well with Symfony components
Use Cases
- Serializer: Complex API responses, data transformation between formats
- Property-info: Form generation, validation, database schema creation
Integration
- Serializer works well in various PHP projects
- Property-info is tightly integrated with Symfony ecosystem
Provides tools to validate values
Pros of Validator
- More comprehensive validation capabilities, including complex rules and constraints
- Supports custom validation messages and translations
- Integrates well with Symfony forms and other components
Cons of Validator
- Heavier and more complex to set up compared to Property-Info
- May be overkill for simple data type validation tasks
- Requires more configuration and boilerplate code
Code Comparison
Property-Info:
use Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor;
$reflectionExtractor = new ReflectionExtractor();
$types = $reflectionExtractor->getTypes(User::class, 'email');
Validator:
use Symfony\Component\Validator\Constraints as Assert;
class User
{
#[Assert\Email]
private $email;
}
Summary
Property-Info is a lightweight component focused on extracting property type information, while Validator is a more robust solution for data validation. Property-Info is simpler to use for basic type checking, but Validator offers more advanced features for complex validation scenarios. Choose Property-Info for quick type introspection, and Validator for comprehensive data validation in Symfony applications.
Allows to easily create, process and reuse HTML forms
Pros of Form
- Provides a complete form handling system with built-in validation
- Offers a wide range of form field types and customization options
- Integrates seamlessly with Symfony's validation component
Cons of Form
- More complex and has a steeper learning curve
- Requires more configuration and boilerplate code
- Can be overkill for simple form handling needs
Code Comparison
Form:
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\Extension\Core\Type\DateType;
$form = $this->createFormBuilder($task)
->add('task', TextType::class)
->add('dueDate', DateType::class)
->getForm();
Property-Info:
use Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor;
$reflectionExtractor = new ReflectionExtractor();
$properties = $reflectionExtractor->getProperties(Task::class);
Summary
Form is a comprehensive solution for handling forms in Symfony applications, offering robust features and integration with other components. However, it can be more complex and require more setup than Property-Info.
Property-Info, on the other hand, focuses on extracting information about class properties, which can be useful for simpler scenarios or when building custom form handling solutions. It's lighter and easier to use but lacks the full form management capabilities of Form.
Choose Form for complex form handling needs and Property-Info for simpler property inspection tasks or as a building block for custom solutions.
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PropertyInfo Component
The PropertyInfo component extracts information about PHP class' properties using metadata of popular sources.
Resources
Top Related Projects
Annotations Docblock Parser
Library for (de-)serializing data of any complexity (supports JSON, and XML)
Provides tools to validate values
Allows to easily create, process and reuse HTML forms
Convert designs to code with AI
Introducing Visual Copilot: A new AI model to turn Figma designs to high quality code using your components.
Try Visual Copilot