A collection of global array_* functions appending to the native PHP set.

• array_flatten( array $array, $allow_duplicates = false )
  • Given an array, find all the values recursively.
• array_blend( array $arrays, array $keys = null )
  • Given an array of arrays, merges the array's children together.
• array_key_array( array $arrays, $key )
  • Given an array of similarly keyed arrays, returns an array of only the values of the key.
• array_keys_array( array $arrays, $keys )
  • Given an array of similarly keyed arrays, returns an array of only the selected keys.
• array_key_refill( array $array, $keys, $fill = array() )
  • Given a keyed array, fills any missing values.