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PHP Array Handling Functions

Function	Action
array_chunk	Split an array into chunks.
array_combine	Create an array by using one array for keys and one array for values.
array_intersect	Returns the intersection of two arrays.
array_key_exists	Return true if a key exists in an array.
array_keys	Return an array containing the keys.
array_merge	Merge two arrays.
array_reverse	Return an array with items in reverse order.
array_shift	Shift an item off of the beginning of an array.
array_sum	Return the sum of an array.
array_unique	Return array with duplicates removed.
array_unshift	Add one or more items to beginning of an array.
array_values	Return an array containing the values.
array	Create a new array.
asort	Sort an array maintaining index association.
count	Return the count of the items in an array.
krsort	Sort an array by key in reverse order.
ksort	Sort an array by key.
rsort	Sort an array by value in reverse order.
shuffle	Shuffle an array's items.
sort	Sort an array by value.

Use this online reference as a manual for all documented PHP functions:
http://www.php.net/quickref.php