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Asked: 2026-05-10T23:07:17+00:00

Is there a list describing all of the data_type parameters you can use in

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Is there a list describing all of the data_type parameters you can use in PDOStatement::bindParam() ? If none, what do you commonly use, and for what type of field ?

According to PHP manual: data_type Explicit data type for the parameter using the PDO::PARAM_* constants.

I know about the PDO::PARAM_INT and PDO::PARAM_STR . I’ve heard of PDO::PARAM_LOB but I wasn’t sure how and when to use that, though. (for date ?)

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  1. From the documentation here:

    PDO::PARAM_BOOL (integer) Represents a boolean data type. PDO::PARAM_NULL (integer) Represents the SQL NULL data type. PDO::PARAM_INT (integer) Represents the SQL INTEGER data type. PDO::PARAM_STR (integer) Represents the SQL CHAR, VARCHAR, or other string data type. PDO::PARAM_LOB (integer) Represents the SQL large object data type. PDO::PARAM_STMT (integer) Represents a recordset type. Not currently supported by any drivers. PDO::PARAM_INPUT_OUTPUT (integer) Specifies that the parameter is an INOUT parameter for a stored procedure. You must bitwise-OR this value with an explicit PDO::PARAM_* data type.
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