What are some recommended pre-built search solutions that can be integrated with PHP for efficient searching of content?

Efficient searching of content in a PHP application can be achieved by integrating pre-built search solutions like Elasticsearch, Solr, or Algolia. These search engines provide powerful indexing and querying capabilities, making it easier to retrieve relevant results quickly.

// Example code snippet using Elasticsearch for content searching

require 'vendor/autoload.php';

use Elasticsearch\ClientBuilder;

$client = ClientBuilder::create()->build();

$params = [
    'index' => 'my_index',
    'body' => [
        'query' => [
            'match' => [
                'content' => 'search keyword'
            ]
        ]
    ]
];

$response = $client->search($params);

print_r($response);