If one parameter name is missing or misspelled, this function throws an error of level E_WARNING, even when PDO::ATTR_ERRMODE is set to PDO::ERRMODE_SILENT!
In the same situation, but when PDO::ERRMODE_WARNING is set, this function throws TWO errors of level E_WARNING!
This function does not throw any error when PDO::ERRMODE_EXCEPTION is set, instead, it throws a PDOException.
All this applies even when you use PDOStatement::bindParam() function with misspelled parameter name and than use PDOStatement::execute();
Tested on: Windows 10, PHP 5.5.35, mysqlnd 5.0.11, MySQL 5.6.30.
<?php
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT);
$colour = 'red';
$sth = $dbh->prepare('SELECT name, colour, calories
FROM fruit
WHERE colour = :colour');
$sth->execute(array(':color' => $colour));
?>
