Using protobuffer in php

Protobuf Introduction

protobuf (Protocol buffers) is a cross-platform, cross-language, scalable data transmission and storage protocol produced by Google. It is an efficient data compression One of the encoding methods.

Protocol buffers are flexible and efficient in serializing data. Compared to XML, Protocol buffers are smaller, faster, and simpler. Once the data structure of the data to be processed is defined, the code generation tool of Protocol buffers can be used to generate the relevant code. Data structures can even be updated without redeploying the program. Use Protobuf to describe your data structure once, and your structured data can be easily read and written in a variety of different languages ​​or from a variety of different data streams.

Protocol buffers are very suitable for data storage or RPC data exchange formats. A language-independent, platform-independent, and extensible serialized structured data format that can be used in communication protocols, data storage and other fields.

In addition, Protobuf is widely used in microservices due to its efficient data exchange efficiency on the intranet. Google's open source framework grpc is built based on this.

php-protobuf installation

Since protobuf does not natively support php, if php uses pb, you need to install the corresponding extension.

pecl install protobuf

The protoc compiler is required in the environment. Download and install method:

$ wget https://github.com/google/protobuf/releases/download/v2.5.0/protobuf-2.5.0.tar.gz
$ tar zxvf protobuf-2.5.0.tar.gz
$ cd protobuf-2.5.0
$ ./configure --prefix=/usr/local/protobuf
$ sudo make 
$ sudo  make install

Verify that the installation is successful:

$ /usr/local/protobuf/bin/protoc  --version
libprotoc 2.5.0

php-protobuf is installed successfully

php --ri protobuf

Installationlumenandgoogle/protobufDependencies

lumen new rpc

lumen new rpcThe command is equivalent to composer create-project laravel/lumen rpc

composer require google/protobuf

Add classmap under composer.json:

{
    "classmap": [
        "protobuf/"
    ]
}

ok, the preparations are all done.

Make a demo yourself

Create a protobuf folder in the code directorymkdir protobuf

Enter the directory and create a filesearchRequest .proto

syntax = "proto3";
message SearchRequest {
    string query = 1;
    int32 page_number = 2;
    int32 result_per_page = 3;
    enum Corpus {
        UNIVERSAL = 0;
        WEB = 1;
        IMAGES = 2;
        LOCAL = 3;
        NEWS = 4;
        PRODUCTS = 5;
        VIDEO = 6;
    }
    Corpus corpus = 4;
}

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