What is the significance of using the MATCH AGAINST function in PHP for determining relevance in search results?
The MATCH AGAINST function in PHP is significant for determining relevance in search results because it allows you to perform a full-text search on columns in a table. This function calculates a relevance score based on the number of times a search term appears in the columns being searched. By using MATCH AGAINST, you can sort the search results by relevance, displaying the most relevant matches at the top.
// Example code snippet using MATCH AGAINST function in PHP
$searchTerm = "example";
$query = "SELECT * FROM table_name WHERE MATCH(column_name) AGAINST('$searchTerm' IN NATURAL LANGUAGE MODE)";
$result = mysqli_query($connection, $query);
// Display search results sorted by relevance
while($row = mysqli_fetch_assoc($result)) {
    echo $row['column_name'] . "<br>";
}