How Can I Retrieve Numeric Data Types from MySQL Using PDO Without String Conversion?

Retrieving Numeric Data Types from MySQL Using PDO

When using PDO and MySQL, you may encounter instances where numeric values retrieved from the database are returned as strings instead of numeric data types. This disparity can arise due to the default behavior of the PHP Database Objects (PDO) extension.

Why Strings Instead of Numbers?

Unfortunately, it is relatively common to receive strings instead of numbers when querying a database. This occurs because the PDO extension typically converts numeric values from the database to strings to ensure compatibility with all supported database drivers.

Disabling String Conversion

To prevent PDO from stringifying numeric values, you can modify the PDO attribute PDO::ATTR_EMULATE_PREPARES. By setting this attribute to false, you can disable prepared statement emulation and allow MySQL to return native data types, including numeric types.

$dsn = 'mysql:dbname=database;host=localhost';
$pdo = new PDO($dsn, $user, $pass, array(
    PDO::ATTR_EMULATE_PREPARES => false
));

PDO::ATTR_STRINGIFY_FETCHES

The PDO::ATTR_STRINGIFY_FETCHES attribute is not applicable to the MySQL PDO driver. This attribute is intended for other database drivers that support returning strings instead of native data types.

Therefore, by disabling PDO's prepared statement emulation, you can ensure that numeric values are returned as native data types, preventing stringification and allowing you to work with the data correctly.

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