参考 `https://github.com/protobuf-php/protobuf`
### 安装Protobuf扩展
到PECL上下载protobuf代码，编译安装
下载地址：https://pecl.php.net/package/protobuf
```
[root@api ~]# mkdir package
[root@api ~]# cd package
[root@api package]# wget https://pecl.php.net/get/protobuf-3.7.0.tgz
[root@api package]# tar xvf protobuf-3.7.0.tgz
[root@api package]# cd protobuf-3.7.0
[root@api protobuf-3.7.0]# phpize
[root@api protobuf-3.7.0]# ./configure
[root@api protobuf-3.7.0]# make && make install
```
### 安装Protobuf编译器
```
[root@api addressbook]# yum install protobuf-compiler
```
然后修改php.ini启用 protobuf扩展，重启php-fpm。用命令行`php -m`或者用`phpinfo()`函数查看扩展是否已经启用。
### 创建测试项目
我们把测试项目创建在`/data/code/addressbook`中
```
[root@api protobuf-3.7.0]# mkdir -p /data/code/addressbook
[root@api protobuf-3.7.0]# cd /data/code/addressbook
[root@api addressbook]# composer require protobuf-php/protobuf
[root@api addressbook]# vim composer.json
{
"require": {
"protobuf-php/protobuf": "^0.1.3"
},
"autoload": {
"psr-4": {
"Tutorial\\": "src/Tutorial/"
}
}
}
[root@api addressbook]# mkdir src
[root@api addressbook]# composer require "protobuf-php/protobuf-plugin"
[root@api addressbook]# vim addressbook.proto
```
addressbook.proto写入如下内容：
```
package tutorial;
import "php.proto";
option (php.package) = "Tutorial.AddressBookProtos";
message Person {
required string name = 1;
required int32 id = 2;
optional string email = 3;
enum PhoneType {
MOBILE = 0;
HOME = 1;
WORK = 2;
}
message PhoneNumber {
required string number = 1;
optional PhoneType type = 2 [default = HOME];
}
repeated PhoneNumber phone = 4;
}
message AddressBook {
repeated Person person = 1;
}
```
开始编译，生成PHP类库
```
[root@api addressbook]# php ./vendor/bin/protobuf --include-descriptors -i . -o ./src/ ./addressbook.proto
PHP classes successfully generate.
```
创建命令程序
```
[root@api addressbook]# touch addressbook
[root@api addressbook]# chmod +x addressbook
[root@api addressbook]# vim addressbook
```
写入如下内容：
```
#!/usr/bin/env php
<?php
include 'vendor/autoload.php';
use Tutorial\AddressBookProtos\Person;
use Tutorial\AddressBookProtos\AddressBook;
// Read the existing address book or create a new one.
$addressBook = is_file($argv[1])
? new AddressBook(file_get_contents($argv[1]))
: new AddressBook();
$person = new Person();
$id = intval(readline("Enter person ID: "));
$name = trim(readline("Enter person name: "));
$email = trim(readline("Enter email address (blank for none): "));
$person->setId($id);
$person->setName($name);
if ( ! empty($email)) {
$person->setEmail($email);
}
while (true) {
$number = trim(readline("Enter a phone number (or leave blank to finish):"));
if (empty($number)) {
break;
}
$phone = new Person\PhoneNumber();
$type = trim(readline("Is this a mobile, home, or work phone? "));
switch (strtolower($type)) {
case 'mobile':
$phone->setType(Person\PhoneType::MOBILE());
break;
case 'work':
$phone->setType(Person\PhoneType::WORK());
break;
case 'home':
$phone->setType(Person\PhoneType::HOME());
break;
default:
echo "Unknown phone type. Using default." . PHP_EOL;
}
$phone->setNumber($number);
$person->addPhone($phone);
}
// Add a person.
$addressBook->addPerson($person);
// Print current address book
echo $addressBook;
// Write the new address book back to disk.
file_put_contents($argv[1], $addressBook->toStream());
```
程序创建完毕，测试执行：
```
[root@api protobuf]# ./addressbook address.book
Enter person ID: 1
Enter person name: Yang Wenjie
Enter email address (blank for none): 13923458160
Enter a phone number (or leave blank to finish):0755-88889999
Is this a mobile, home, or work phone? home
[root@api protobuf]# ./addressbook address.book
Enter person ID: 1
Enter person name: Yang Wenjie
Enter email address (blank for none): 8162782@qq.com
Enter a phone number (or leave blank to finish):13923458160
Is this a mobile, home, or work phone? mobile
Enter a phone number (or leave blank to finish):0755-99998888
Is this a mobile, home, or work phone? work
Enter a phone number (or leave blank to finish):0755-99990000
Is this a mobile, home, or work phone? home
Enter a phone number (or leave blank to finish):
person {
name: "Yang Wenjie"
id: 1
email: "8162782@qq.com"
phone {
number: "13923458160"
type: MOBILE
}
phone {
number: "0755-99998888"
type: WORK
}
phone {
number: "0755-99990000"
type: HOME
}
}
[root@api protobuf]#
```
程序在当前目录下输出了address.book二进制文件保存数据。
