How can the number of parameters be counted and verified before executing a query in PHP?

When executing a query in PHP, it is important to ensure that the correct number of parameters are provided to prevent errors or SQL injection attacks. One way to count and verify the number of parameters before executing a query is by using the `count()` function on the array of parameters. By comparing the count of parameters to the expected number, you can validate that the correct number of parameters are passed before executing the query.

// Example code to count and verify the number of parameters before executing a query
$params = array($param1, $param2, $param3); // Array of parameters
$expectedParams = 3; // Expected number of parameters

if(count($params) === $expectedParams) {
    // Execute the query with the parameters
    $stmt = $pdo->prepare("SELECT * FROM table WHERE column1 = ? AND column2 = ? AND column3 = ?");
    $stmt->execute($params);
} else {
    // Handle error or display a message
    echo "Incorrect number of parameters provided.";
}