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Informations about the package psr7-stream
drewlabs-psr7-stream
Provides an implementation of the PSR7 Stream and StreamFactory interfaces
Usage
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Creating a Psr7 Stream
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Stream Factory
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Creating a Psr7 Stream from a PHP resource
- Creating a Psr7 Stream from file path
+v1.2x
From v1.2.x releases a stacked stream implemenation and a lazy stream implementations has been added.
- Stacked Streams
Stacked stream is an abstraction of the stream interface that creates a stack of StreamInterface instances using contiguous memory (Array) and provides same stream interface API for working with the group as whole. For operations like close(), detach(), read(), getSize(), etc... every item is visited in the order they are inserted.
To create a Stacked stream:
Note The stacked stream provide 2 additional methods for adding and removing element.
To add a new stream to the stack:
To remove the last inserted stack:
Warning
Be careful when using the pop() method as it reset the internal pointer of the stream to avoid data corrumption.
- Lazy Stream
Lazy stream is simply an abstraction arround a stream object which resolve the stream only when the developper is ready to operate on it like read(), write(), etc... It provides a lazy creating implementation of an instance psr7 StreamInterface.
Lazy stream can be created passing a callable to the contructor method:
or using an instance of CreatesStream interface, with offer an object oriented way to create a new stream:
