What are some potential pitfalls of using Google's onsite search for a website?

One potential pitfall of using Google's onsite search for a website is that it may not provide as much customization and control over search results compared to a custom-built search engine. This can result in less relevant search results for users. To address this, consider implementing a custom search engine using a tool like Elasticsearch or Solr, which allows for more fine-tuned control over search functionality.

// Example code for implementing a custom search engine using Elasticsearch

// Connect to Elasticsearch
$client = Elasticsearch\ClientBuilder::create()->build();

// Define search parameters
$params = [
    'index' => 'my_index',
    'type' => 'my_type',
    'body' => [
        'query' => [
            'match' => [
                'my_field' => 'search_query'
            ]
        ]
    ]
];

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

// Process search results
foreach ($response['hits']['hits'] as $hit) {
    // Display search results
}