What is the significance of using mysql_num_rows() in PHP and how does it impact query results?

Using mysql_num_rows() in PHP is significant because it allows you to retrieve the number of rows returned by a SELECT query. This function can be used to determine the number of rows in the result set, which can be useful for various purposes such as pagination, conditional logic, or simply for displaying the number of results to the user. 

// Connect to the database
$conn = mysqli_connect("localhost", "username", "password", "database");

// Run a SELECT query
$query = "SELECT * FROM table";
$result = mysqli_query($conn, $query);

// Get the number of rows returned
$num_rows = mysqli_num_rows($result);

// Display the number of rows
echo "Number of rows: " . $num_rows;

Keywords

PHP mysql_num_rows() query results significance impact

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