What are the potential pitfalls of storing search keywords in a file versus a database table in PHP?

Storing search keywords in a file can lead to slower retrieval times and limited search functionality compared to storing them in a database table. To improve performance and flexibility, it is recommended to store search keywords in a database table where they can be easily queried and indexed. 

// Connect to the database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "search_keywords";

$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Query database table for search keywords
$sql = "SELECT keyword FROM keywords_table WHERE keyword LIKE '%search_term%'";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // Output data of each row
    while($row = $result->fetch_assoc()) {
        echo "Keyword: " . $row["keyword"]. "<br>";
    }
} else {
    echo "0 results";
}

$conn->close();

Keywords

file storage database table performance scalability security

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