What is the best way to bind decimal / double / float values with PDO in PHP?

问题

It appears the class constants only cover PDO::PARAM_BOOL, PDO::PARAM_INT and PDO::PARAM_STR for binding. Do you just bind decimal / float / double values as strings or is there a better way to treat them?

MySQLi allows the 'd' type for double, it's surprising that PDO doesn't have an equivalent when it seems better in so many other ways.

回答1:

AFAIK PDO::PARAM_STR is the way to go.

回答2:

You have to use PDO::PARAM_STR, but for SQLite and other engines this can have unpredictable behaviors. See this issue for one example: SQLite HAVING comparison error

回答3:

If you really want to use PDO you'll have to enter it as an PARAM_INT, but I never use a specification for double.

It is an optional parameter to specify the PDO type.

I guess you would better not set the PDO type for doubles.

来源：https://stackoverflow.com/questions/1335081/what-is-the-best-way-to-bind-decimal-double-float-values-with-pdo-in-php