Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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99 lines
2.9 KiB
99 lines
2.9 KiB
This directory contains the Protocol Buffers runtime implementation via both a |
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pure PHP package and a native c extension. The pure PHP package is intended to |
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provide usability to wider range of PHP platforms, while the c extension is |
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intended to provide higher performance. Both implementations provide the same |
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runtime APIs and share the same generated code. Users don’t need to re-generate |
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code for the same proto definition when they want to switch the implementation |
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later. |
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Both implementations make use of generated PHP code that defines message and |
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enum types in PHP. We strongly recommend using protoc's PHP generation support |
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with .proto files. The build process in this directory only installs the |
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extension/package; you need to install protoc as well to have PHP code |
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generation functionality. |
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## Requirements |
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To use PHP runtime library requires: |
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- C extension: PHP 5.5.x or 5.6.x. |
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- PHP package: PHP 5.5, 5.6 or 7. |
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## Installation |
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### C Extension |
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#### Prerequirements |
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To install the c extension, the following tools are needed: |
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* autoconf |
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* automake |
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* libtool |
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* make |
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* gcc |
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* pear |
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* pecl |
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On Ubuntu, you can install them with: |
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``` |
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sudo apt-get install php-pear php5-dev autoconf automake libtool make gcc |
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``` |
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On other platforms, please use the corresponding package managing tool to |
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install them before proceeding. |
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#### Installation from Source (Building extension) |
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To build the c extension, run the following command: |
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``` |
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cd ext/google/protobuf |
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pear package |
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sudo pecl install protobuf-{VERSION}.tgz |
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``` |
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#### Installation from PECL |
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When we release a version of Protocol Buffers, we will upload the extension to |
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[PECL](https://pecl.php.net/). To use this pre-packaged extension, simply |
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install it as you would any other extension: |
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``` |
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sudo pecl install protobuf-{VERSION} |
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``` |
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### PHP Package |
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#### Installation from composer |
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Simply add "google/protobuf" to the 'require' section of composer.json in your |
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project. |
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### Protoc |
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Once the extension or package is installed, if you wish to generate PHP code |
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from a `.proto` file, you will also want to install the Protocol Buffers |
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compiler (protoc), as described in this repository's main `README` file. The |
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version of `protoc` included in the latest release supports the `--php_out` |
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option to generate PHP code: |
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``` |
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protoc --php_out=out_dir test.proto |
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``` |
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## Usage |
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For general guide: |
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https://developers.google.com/protocol-buffers/phptutorial/ |
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For generated code: |
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https://developers.google.com/protocol-buffers/docs/reference/php-generated |
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Known Issues |
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------------ |
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* Missing native support for well known types. |
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* Missing support for proto2. |
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* No API provided for clear/copy messages. |
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* No API provided for encoding/decoding with stream. |
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* Map fields may not be garbage-collected if there is cycle reference. |
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* No debug information for messages in c extension. |
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* HHVM not tested. |
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* C extension not tested on windows, mac, php 7.0. |
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* Message name cannot be Empty.
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