What best practices should be followed when designing a search algorithm in PHP to handle multiple keywords efficiently?

When designing a search algorithm in PHP to handle multiple keywords efficiently, it is best to use a combination of techniques such as tokenizing the search query, utilizing indexes for faster retrieval, and optimizing the query to minimize unnecessary operations. Additionally, using a full-text search engine like Elasticsearch or Solr can greatly improve search performance for handling multiple keywords. 

// Example PHP code snippet for handling multiple keywords efficiently in a search algorithm

// Assuming $searchQuery contains the user input search query with multiple keywords
$searchQuery = "apple banana orange";

// Tokenize the search query
$keywords = explode(" ", $searchQuery);

// Build and execute the search query efficiently
$query = "SELECT * FROM products WHERE ";
foreach($keywords as $key => $keyword) {
    $query .= "product_name LIKE '%$keyword%'";
    if($key < count($keywords) - 1) {
        $query .= " AND ";
    }
}

// Execute the query and fetch results
// $results = $pdo->query($query)->fetchAll();

Keywords

PHP search algorithm multiple keywords efficiency design.

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