PHP Array Functions

#	Function	Description
1	array_change_key_case	Changes all keys in an array to lower case or upper case.
2	array_chunk	Split an array into chunks for a new array
3	array_combine	Creates an array by combining one array for keys and another for its values
4	array_count_values	Counts all the values of an array where the key is the array values and the value is the number of occurrences.
5	array_diff_assoc	Compares two or more arrays, use the first array for the comparison. Return an array with the keys and value pair if the first array do not present in any of the other arrays.
6	array_diff_key	Compares two or more arrays using keys for comparison
7	array_diff_uassoc	Compares two or more arrays by using the user supply callback function. It returns the keys and values from the first array, when the function is matched.
8	array_diff_ukey	Compares two or more arrays by using a callback function on the keys for comparison
9	array_diff	Compares two or more arrays, and only return the keys and values from the first array when only the first array values are not present in all other arrays.
10	array_fill	Fill an array with values by user supply.
11	array_filter	Filters elements of an array using a callback function, only return the array when the array value satisfy the callback function.
12	array_flip	Make array keys to be value and array value to be key.
13	array_intersect_assoc	Compares two or more arrays by using the first array. Return only the first array with key and value pair when the first array present in all of the other arrays.
14	array_intersect_key	Computes the intersection of arrays using keys for comparison. This function uses the first array to check with all other arrays.
15	array_intersect_uassoc	Compares two or more arrays by using the first array. Return only the first array with key and value pair when the first array key is satisfy in the user defined function.
16	array_intersect_ukey	Compares the intersection of arrays using keys for comparison with the user callback function. This function uses the first array to check with all other arrays based on the callback function.
17	array_intersect	Compares the intersection of arrays based on the first array. Return key and value pairs of the first array when the array value is present in all the other arrays.
18	array_key_exists	Checks if the given key or index exists in the array
19	array_keys	Return all the keys or a subset of the keys of an array
20	array_map	Use the callback function for each array value, and return a new array based on the callback function.
21	array_merge_recursive	Merge two or more arrays recursively into one array. When the array has the same key, instead of override the keys, the function makes the value as an array.
22	array_merge	Merge one or more arrays into one array. Array keys will be override when it is a duplicate key.
23	array_multisort	Sort multiple or multi-dimensional arrays
24	array_pad	Pad array to the specified length with a value
25	array_pop	Pop the element off the end of array
26	array_product	Calculate the product of values in an array
27	array_push	Push one or more elements onto the end of array
28	array_rand	Pick one or more random entries out of an array
29	array_reduce	Iteratively reduce the array to a single value using a callback function
30	array_replace_recursive	Replaces elements from passed arrays into the first array recursively
31	array_replace	Replaces elements from passed arrays into the first array
32	array_reverse	Return an array with elements in reverse order
33	array_search	Searches the array for a given value and returns the corresponding key if successful
34	array_shift	Shift an element off the beginning of array
35	array_slice	Extract a slice of the array
36	array_splice	Remove a portion of the array and replace it with something else
37	array_sum	Calculate the sum of values in an array
38	array_udiff_assoc	Computes the difference of arrays with additional index check, compares data by a callback function
39	array_udiff_uassoc	Computes the difference of arrays with additional index check, compares data and indexes by a callback function
40	array_udiff	Computes the difference of arrays by using a callback function for data comparison
41	array_uintersect_assoc	Computes the intersection of arrays with additional index check, compares data by a callback function
42	array_uintersect_uassoc	Computes the intersection of arrays with additional index check, compares data and indexes by a callback functions
43	array_uintersect	Computes the intersection of arrays, compares data by a callback function
44	array_unique	Removes duplicate values from an array
45	array_unshift	Prepend one or more elements to the beginning of an array
46	array_values	Return all the values of an array
47	array_walk_recursive	Apply a user function recursively to every member of an array
48	array_walk	Apply a user function to every member of an array
49	array	Create an array
50	arsort	Sort an array in reverse order and maintain index association
51	asort	Sort an array and maintain index association
52	compact	Create array containing variables and their values
53	count	Count all elements in an array, or something in an object
54	current	Return the current element in an array
55	each	Return the current key and value pair from an array and advance the array cursor
56	end	Set the internal pointer of an array to its last element
57	extract	Import variables into the current symbol table from an array
58	in_array	Checks if a value exists in an array
59	key	Fetch a key from an array
60	krsort	Sort an array by key in reverse order
61	ksort	Sort an array by key
62	list	Assign variables as if they were an array
63	natcasesort	Sort an array using a case insensitive "natural order" algorithm
64	natsort	Sort an array using a "natural order" algorithm
65	next	Advance the internal array pointer of an array
66	pos	Alias of current
67	prev	Rewind the internal array pointer
68	range	Create an array containing a range of elements
69	reset	Set the internal pointer of an array to its first element
70	rsort	Sort an array in reverse order
71	shuffle	Shuffle an array
72	sizeof	Alias of count
73	sort	Sort an array
74	uasort	Sort an array with a user-defined comparison function and maintain index association
75	uksort	Sort an array by keys using a user-defined comparison function
76	usort	Sort an array by values using a user-defined comparison function