How to Bind Decimal Values in PDO Parameter Binding?

PDO Parameter Binding for Decimal Types

When working with database fields of type decimal, finding the appropriate PDO parameter binding type can be a challenge.

Consider the following database fields:

decval decimal(5,2)
intval int(3)

In this scenario, attempting to update the decval field using the following methods fails:

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

The reason for this issue is that PDO does not have a dedicated parameter type for decimal/float values. Therefore, the workaround involves using PDO::PARAM_STR, as seen below:

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

This approach has been proven to successfully update decimal fields in the database.

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