List of Array Functions
Summary: List of Predefined Array Functions
PHP − indicates the earliest version of PHP that supports the Predefined Array Functions.
| Sr.No | Function | Description | PHP Version |
|---|---|---|---|
| 1 | array() |
Create an array |
3 |
| 2 | array_change_key_case() |
Returns an array with all keys in lowercase or uppercase |
4 |
| 3 | array_chunk() |
Splits an array into chunks of arrays |
4 |
| 4 | array_combine() |
Creates an array by using one array for keys and another for its values |
5 |
| 5 | array_count_values() |
Returns an array with the number of occurrences for each value |
4 |
| 6 | array_diff() |
Compares array values, and returns the differences |
4 |
| 7 | array_diff_assoc() |
Compares array keys and values, and returns the differences |
4 |
| 8 | array_diff_key() |
Compares array keys, and returns the differences |
5 |
| 9 | array_diff_uassoc() |
Compares array keys and values, with an additional user-made function check, and returns the differences |
5 |
| 10 | array_diff_ukey() |
Compares array keys, with an additional user-made function check, and returns the differences |
5 |
| 11 | array_fill() |
Fills an array with values |
4 |
| 12 | array_fill_keys() |
Fill an array with values, specifying keys |
5 |
| 13 | array_filter() |
Filters elements of an array using a user-made function |
4 |
| 14 | array_flip() |
Exchanges all keys with their associated values in an array |
4 |
| 15 | array_intersect() |
Compares array values, and returns the matches |
4 |
| 16 | array_intersect_assoc() |
Compares array keys and values, and returns the matches |
4 |
| 17 | array_intersect_key() |
Compares array keys, and returns the matches |
5 |
| 18 | array_intersect_uassoc() |
Compares array keys and values, with an additional user-made function check, and returns the matches |
5 |
| 19 | array_intersect_ukey() |
Compares array keys, with an additional user-made function check, and returns the matches |
5 |
| 20 | array_key_exists() |
Checks if the specified key exists in the array |
4 |
| 21 | array_keys() |
Returns all the keys of an array |
4 |
| 22 | array_map() |
Sends each value of an array to a user-made function, which returns new values |
4 |
| 23 | array_merge() |
Merges one or more arrays into one array |
4 |
| 24 | array_merge_recursive() |
Merges one or more arrays into one array |
4 |
| 25 | array_multisort() |
Sorts multiple or multi-dimensional arrays |
4 |
| 26 | array_pad() |
Inserts a specified number of items, with a specified value, to an array |
4 |
| 27 | array_pop() |
Deletes the last element of an array |
4 |
| 28 | array_product() |
Calculates the product of the values in an array |
5 |
| 29 | array_push() |
Inserts one or more elements to the end of an array |
4 |
| 30 | array_rand() |
Returns one or more random keys from an array |
4 |
| 31 | array_reduce() |
Returns an array as a string, using a user-defined function |
4 |
| 32 | array_reverse() |
Returns an array in the reverse order |
4 |
| 33 | array_search() |
Searches an array for a given value and returns the key |
4 |
| 34 | array_shift() |
Removes the first element from an array, and returns the value of the removed element |
4 |
| 35 | array_slice() |
Returns selected parts of an array |
4 |
| 36 | array_splice() |
Removes and replaces specified elements of an array |
4 |
| 37 | array_sum() |
Returns the sum of the values in an array |
4 |
| 38 | array_udiff() |
Compares array values in a user-made function and returns an array |
5 |
| 39 | array_udiff_assoc() |
Compares array keys, and compares array values in a user-made function, and returns an array |
5 |
| 40 | array_udiff_uassoc() |
Compares array keys and array values in user-made functions, and returns an array |
5 |
| 41 | array_uintersect() |
Compares array values in a user-made function and returns an array |
5 |
| 42 | array_uintersect_assoc() |
Compares array keys, and compares array values in a user-made function, and returns an array |
5 |
| 43 | array_uintersect_uassoc() |
Compares array keys and array values in user-made functions, and returns an array |
5 |
| 44 | array_unique() |
Removes duplicate values from an array |
4 |
| 45 | array_unshift() |
Adds one or more elements to the beginning of an array |
4 |
| 46 | array_values() |
Returns all the values of an array |
4 |
| 47 | array_walk() |
Applies a user function to every member of an array |
3 |
| 48 | array_walk_recursive() |
Applies a user function recursively to every member of an array |
5 |
| 49 | arsort() |
Sorts an array in reverse order and maintain index association |
3 |
| 50 | asort() |
Sorts an array and maintain index association |
3 |
| 51 | compact() |
Create array containing variables and their values |
4 |
| 52 | count() |
Counts elements in an array, or properties in an object |
3 |
| 53 | current() |
Returns the current element in an array |
3 |
| 54 | each() |
Returns the current key and value pair from an array |
3 |
| 55 | end() |
Sets the internal pointer of an array to its last element |
3 |
| 56 | extract() |
Imports variables into the current symbol table from an array |
3 |
| 57 | in_array() |
Checks if a specified value exists in an array |
4 |
| 58 | key() |
Fetches a key from an array |
3 |
| 59 | krsort() |
Sorts an array by key in reverse order |
3 |
| 60 | ksort() |
Sorts an array by key |
3 |
| 61 | list() |
Assigns variables as if they were an array |
3 |
| 62 | natcasesort() |
Sorts an array using a case insensitive "natural order" algorithm |
4 |
| 63 | natsort() |
Sorts an array using a "natural order" algorithm |
4 |
| 64 | next() |
Advance the internal array pointer of an array |
3 |
| 65 | pos() |
Alias of current() |
3 |
| 66 | prev() |
Rewinds the internal array pointer |
3 |
| 67 | range() |
Creates an array containing a range of elements |
3 |
| 68 | reset() |
Sets the internal pointer of an array to its first element |
3 |
| 69 | rsort() |
Sorts an array in reverse order |
3 |
| 70 | shuffle() |
Shuffles an array |
3 |
| 71 | sizeof() |
Alias of count() |
3 |
| 72 | sort() |
Sorts an array |
3 |
| 73 | uasort() |
Sorts an array with a user-defined function and maintain index association |
3 |
| 74 | uksort() |
Sorts an array by keys using a user-defined function |
3 |
| 75 | usort() |
Sorts an array by values using a user-defined function |
3 |
