php protobuf 安装使用2

一．摘要
　　和上一文差不多，只是php的protobuf扩展用第三方实现了，看起来更简单更方便使用protobuf.

二．安装protoc编译器
　　和上文一样．

三．安装php扩展
　  cd /data
　　git clone https://github.com/allegro/php-protobuf
　　cd php-protobuf
　　git checkout -b php5 origin/php5
　　
　　/usr/local/php/bin/phpize
　　./configure && make && sudo make install
　　php.ini文件: extension=protobuf.so
　　php -m |grep protobuf


　　composer install

四．使用protobuf
　　１．协议文件编写
　　./proto/person.proto

syntax = "proto3";
package Playwhale;

message Person{
    string name = 1;
    int32  age  = 2;
    string email = 3;
    enum PhoneType{
        HOME = 0;
        MOBILE = 1;
        WORK = 2;
    }
    message Phone{
        int64 id = 1;
        PhoneType type = 2;
    }
    repeated Phone phoneNum = 4;
}

message UserList{
    string name = 1;
    repeated Person users = 2;
}

　　２．编译协议文件
　　　　php /data/php-protobuf/protoc-gen-php.php -o ./pb ./proto/person.proto
　　　　　 如果用protobuf编译时报错：protoc: error while loading shared libraries: libprotoc.so.9: cannot open shared obje：
　　　　　　　　文件：/etc/bash.bashrc，
　　　　　　　　添加一行代码：　export LD_LIBRARY_PATH=/usr/local/lib

　　３．测试

　　　　a．测试文件：　　./tests/meng.php

<?php
/**
 * Created by PhpStorm.
 * User: meng
 * Date: 18-10-17
 * Time: 下午3:26
 */
$start_time = microtime(true);
$start_mem = memory_get_usage();

include '../Autoloader.php';
use Playwhale\Person;

$from = new \Playwhale\Person();
$from->setName('jack');
$from->setAge(100);
$from->setEmail('foo bar, this is a message');
//phone
$phones = array();
$phone_obj = new \Playwhale\Person_Phone();
$phone_obj->setId(10000);
$phone_obj->setType(\Playwhale\Person_PhoneType::HOME);
$from->appendPhoneNum($phone_obj);
$phone_obj = new \Playwhale\Person_Phone();
$phone_obj->setId(50000);
$phone_obj->setType(\Playwhale\Person_PhoneType::WORK);
$from->appendPhoneNum($phone_obj);

//$encode_data = $from->serializeToString();
$encode_data = $from->serializeToString();
printf("encode_data=%s\n", $encode_data);
printf("from: phoneNum=%s\n", json_encode($from->getPhoneNum()));
file_put_contents('data.bin', $encode_data);
echo "\n";
echo "\n";

$to = new \Playwhale\Person();
$to->parseFromString($encode_data);
printf("name=%s\n", $to->getName());
printf("age=%s\n", $to->getAge());
printf("email=%s\n", $to->getEmail());
$count = $to->getPhoneNumCount();
/*
foreach ($to->getPhoneNum() as $tmp_phone_obj) {
    printf("phone: id=%s, type=%s\n", $tmp_phone_obj->getId(), $tmp_phone_obj->getType());
}
*/
/*
for ($i = 0; $i < $count; ++$i) {
    $tmp_phone_obj = $to->getPhoneNumAt($i);
    printf("phone: id=%s, type=%s\n", $tmp_phone_obj->getId(), $tmp_phone_obj->getType());
}
*/
/**@var \ArrayIterator $iterator*/
$iterator = $to->getPhoneNumIterator();
while ($iterator->valid()) {
    $tmp_phone_obj = $iterator->current();
    printf("phone: id=%s, type=%s\n", $tmp_phone_obj->getId(), $tmp_phone_obj->getType());
    $iterator->next();
}
echo "\n";
echo "\n";

$end_time = microtime(true);
$end_mem = memory_get_usage();
$mem = ($end_mem - $start_mem) / 1024 / 1024;
printf("\nlast seconds=%ss, lost_mem=%sm ok.\n", $end_time-$start_time, $mem);

　　b．Autoloader.php

<?php
class Autoloader
{
    /**
     * Load files by namespace.
     *
     * @param string $name
     * @return boolean
     */
    public static function loadByNamespace($name)
    {
        $class_path = str_replace('\\', DIRECTORY_SEPARATOR, $name);
        if (strpos($name, 'Playwhale\\') === 0) {
            $class_file = __DIR__. '/pb/'. $class_path . '.php';
        }

        if (is_file($class_file)) {
            include_once($class_file);
            if (class_exists($name, false)) {
                return true;
            }
        }
        return false;
    }
}

spl_autoload_register('Autoloader::loadByNamespace');

　　　　c．测试
　　　　　　/usr/local/bin/php -dxdebug.remote_enable=1 -dxdebug.remote_mode=req -dxdebug.remote_port=9000 -dxdebug.remote_host=127.0.0.1 ./tests/meng.php 　　　　

　　　　d．测试结果
　　　　　　last seconds=0.0011978149414062s, lost_mem=0.0703125m ok.
　　　　　　last seconds=0.0010819435119629s, lost_mem=0.0703125m ok.
　　　　　　last seconds=0.0011160373687744s, lost_mem=0.0703125m ok.

五．总结
　　allegro/php-protobuf，这个php扩展使用起来就是好！