Retrieves uploads directory information.

Guess the URL for the site.

Determines if the variable is a numeric-indexed array.

Test if a given path is a stream URL

Validates that a UUID is valid.

Determine if a directory is writable.

Encode a variable into JSON, with some sanity checks.

Reads and decodes a JSON file.

Filters a list of objects, based on a set of key => value arguments.

Plucks a certain field out of each object or array in an array.