phpmysqljoomlajoomla-dbo

Find if string is MySQL function in PHP

I have a function that takes an array and creates a SQL statement based on they key/value pairs of the array. For example:

 name=>SomeKittens

It'd turn into

(`name`) VALUES ('SomeKittens')

The only problem is when I use a MySQL string function such as NOW().

creation_date=>NOW()

turns into

(`creation_date`) VALUES ('NOW()')

Note that NOW() is escaped. Is there any way to detect if the value is a MySQL string function? (besides of course $value === "NOW()")

I'm using the Joomla DBO but am open to PDO/MySQLi solutions as well.

(relevant chat discussion)

Solution

  • If you allow functions with arguments I don't think you will be able to protect your db against SQL injections.
    If you allow only functions w/o arguments (like NOW()) you might as well hardcode a list.