Inserting UTF-8 encoded string into UTF-8 encoded mysql table fails with "Incorrect string value"

(U+1D10E) is a character Unicode found outside the BMP (Basic Multilingual Plane) (above U+FFFF) and thus can't be represented in UTF-8 in 3 bytes. MySQL charset utf8 only accepts UTF-8 characters if they can be represented in 3 bytes. If you need to store this in MySQL, you'll need to use MySQL charset utf8mb4. You'll need MySQL 5.5.3 or later. You can use ALTER TABLE to change the character set without much problem; since it needs more space to store the characters, a couple issues show up that may require you to reduce string size. See http://dev.mysql.com/doc/refman/5.5/en/charset-unicode-upgrading.html .

to solve this issue, first you change your database field to utf8m4b charset. For example:

ALTER TABLE `tb_name` CHANGE `field_name` `field_name` VARCHAR(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL; 

then in your db connection, set driver_options for it to utf8mb4. For example, if you use PDO

$db = new PDO('mysql:host=localhost;dbname=testdb;charset=utf8mb4', 'username', 'password');

or in zend framework 1.2

$dbParam = array('host' => 'localhost', 'username' => 'db_user_name',
            'password' => 'password', 'dbname' => 'db_name',
            'driver_options' => array(
                '1002' => "SET NAMES 'utf8mb4'",
                '12'    => 0 //this is not necessary
            )
        );

In your PDO connecton, set the charset.

new PDO('mysql:host=localhost;dbname=the_db;charset=utf8mb4', $user, $password);