Passing return values from a function to bindParam in PDO

bindParam() doesn't seem to evaluate a function and then bind its return value to the parameter of the prepar开发者_运维百科ed statement, like so

$stmt->bindParam('foo', bar());

So, in order to get around this, is it good practice to do this instead?

$stmt->bindParam('foo', eval(bar()));

Or is there something else someone out there can recommend doing? Thanks!

Better to use bindValue() instead of bindParam(), it can pass values as well:

$stmt->bindValue('foo', bar());