How to Bind Decimal Data in PDO Using PHP?

Binding Decimal Data in PDO

This question explores the issue of binding values to decimal or float database fields using PHP Data Objects (PDO). The user encountered difficulties updating a decimal field using the PDO::PARAM_INT parameter type.

PDO::PARAM for Decimal Data

Unfortunately, there is no dedicated PDO::PARAM type specifically for decimal or float data. This means that the user's initial attempt to use PDO::PARAM_INT for a decimal field will not work.

Workaround: Using PDO::PARAM_STR

As per the response provided, the workaround is to utilize PDO::PARAM_STR for decimal or float data. This is because PDO automatically converts string values to decimals when binding to decimal database fields.

Example Code

The code snippet below demonstrates the correct way to bind a decimal value using PDO::PARAM_STR:

$update_decval->bindParam(':decval', $decval, PDO::PARAM_STR);

By using PDO::PARAM_STR, the PDO library will properly handle the conversion to a decimal type, allowing the user to successfully update the decimal field in the database.

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