README

PHP abstraction layer for neo4j graph database

Installation

Run the following command in your project to add this library:

composer require innmind/neo4j-dbal

Documentation

Basic example to run a query:

use function Innmind\Neo4j\DBAL\bootstrap;
use Innmind\Neo4j\DBAL\{
    Query,
    Clause\Expression\Relationship
};
use Innmind\OperatingSystem\Factory;

$os = Factory::build();
$connection = bootstrap(
    $os->remote()->http(),
    $os->clock(),
);

$query = (new Query)
    ->match('n', ['LabelA', 'LabelB'])
        ->withProperty('foo', '$param')
        ->withParameter('param', 'value')
    ->linkedTo('n2')
    ->through('r', 'REL_TYPE', 'right')
    ->return('n', 'n2', 'r');
echo $query->cypher(); //MATCH (n:LabelA:LabelB { foo: $param })-[r:REL_TYPE]->(n2) RETURN n, n2, r

$result = $connection->execute($query);
echo $result->nodes()->count(); //2
echo $result->relationships()->count(); //1

Note: Each object in this library is immutable, so $query->match('n')->match('n2') is different than $query->match('n'); $query->match('n2').

Querying

You have 3 options to execute a query:

• use Query to build the query via its API
• use Cypher where you put the raw cypher query
• create your own class that implements Query

Structure