2

我正在做一个需要在图形数据库上工作的项目。所以我学习了 Neo4j（密码语言）的基础知识。但我不知道如何从 php 访问/查询数据库。或者建议我使用其他任何方式来处理图形数据库。

帮助将不胜感激。

作曲家.json

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]

4

2 回答 2

1

作为快速入门指南，使用 NeoClient 与使用 Cypher 非常相似，不同之处在于您使用客户端方法发送它：

设置客户端

假设您使用 2.2 并且您的密码是 "password" ：

<?php

require_once(__DIR__.'/vendor/autoload.php');

use Neoxygen\NeoClient\ClientBuilder;

$client = ClientBuilder::create()
->addConnection('default','http','localhost',7474,true,'neo4j','password')
->setAutoFormatResponse(true)
->build();

然后，您可以使用客户端发送 Cypher 查询：

发送密码

创建节点

$query = 'CREATE (user:User {name:"john"})';
$client->sendCypherQuery($query);

检索节点

$query = 'MATCH (user:User {name:"john"}) RETURN user';
$result = $client->sendCypherQuery()->getResult();
// accessing the user identifier (so the user node) from the result
$john = $result->get('user');

管理节点对象

// The $john is a wrapped Node object and have some methods

// The node id
echo $john->getId();
// The labels
print_r($john->getLabels());
// The properties
echo $john->getProperty('name');

创建关系（使用 Cypher）

$query = 'MATCH (user:User {name:"john"})
CREATE (friend:User {name:"Judith"})
MERGE (user)-[r:FRIEND]->(friend)
RETURN user, friend, r';
$result = $client->sendCypherQuery($q)->getResult();

$john = $result->get('user');
$judith = $result->get('judith');

// What john has for relationships

print_r($john->getRelationships()); // returns relationships objects

// Get a node connected to john

print_r($john->getConnectedNode());

我认为NeoClient 存储库的 README非常有文档，所以我不会在这里重写所有内容。

于 2015-06-08T12:33:02.303 回答
0

Neo4J 上的页面http://neo4j.com/developer/php/有一些指向 PHP 库的链接，您可以使用这些链接与 Neo4J 进行交互。

例如，你可以在这里安装这个：https ://github.com/neoxygen/neo4j-neoclient

您应该阅读他们在 GitHub 页面上的介绍，其中解释了如何安装它以及如何与数据库建立连接（您可以简单地复制并粘贴他们的示例代码）。

完成此操作后，您可以执行以下查询

$q = 'MATCH (n:Actor) RETURN n.name';
$client->sendCypherQuery($q);
$result = $client->getRows();`

使用您从 PHP 代码中已经知道的 Cypher。

如果您想要比这更简单的东西，请尝试另一个库：只需按照https://github.com/neo4j-contrib/developer-resources/tree/gh-pages/language-guides/php/neo4jphp上的说明进行操作即可运行 PHP 到 Neo4J 应用程序的示例。

按照他们说的做所有事情，然后简单地将内部的查询更改为您需要的查询。这样，如果您发现难以使用它，您将拥有自己的 PHP 应用程序，而无需编写一行 PHP。

于 2015-06-08T12:26:24.453 回答