PHP code example of ankane / ngt

1. Go to this page and download the library: Download ankane/ngt library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

ankane / ngt example snippets


$objects = [
    [1, 1, 2, 1],
    [5, 4, 6, 5],
    [1, 2, 1, 2]
];


$index = new Ngt\Index($dimensions);


$index->batchInsert($objects);


$index->search($query, size: 3);


$index->save($path);


$index = Ngt\Index::load($path);


$index->object($id);


$index->insert($object);


$index->remove($id);


$index->buildIndex();


$dim = 10;
$objects = [];
for ($i = 0; $i < 100; $i++) {
    $object = [];
    for ($j = 0; $j < $dim; $j++) {
        $object[] = rand(0, 100);
    }
    $objects[] = $object;
}

$index = new Ngt\Index($dim);
$index->batchInsert($objects);

$query = $objects[0];
$result = $index->search($query, size: 3);

foreach ($result as $res) {
    print($res['id'] . ', ' . $res['distance'] . "\n");
}


use Ngt\DistanceType;
use Ngt\ObjectType;

new Ngt\Index(
    $dimensions,
    edgeSizeForCreation: 10,
    edgeSizeForSearch: 40,
    distanceType: DistanceType::L2,  // L1, L2, Hamming, Angle, Cosine, NormalizedAngle, NormalizedCosine, Jaccard
    objectType: ObjectType::Float    // Float, Float16, Integer
);

sh
git clone https://github.com/ankane/ngt-php.git
cd ngt-php
composer install
composer test