Home > Quick Reference Library > Date and Time Functions
Array Functions
These functions allow you to interact with and manipulate arrays in various ways. Arrays are essential for storing, managing, and operating on sets of variables.
Simple and multi-dimensional arrays are supported, and may be either user created or created by another function. There are specific database handling functions for populating arrays from database queries, and several functions return arrays.
Please see the Arrays section of the manual for a detailed explanation of how arrays are implemented and used in PHP. See also Array operators for other ways how to manipulate the arrays.
- array_change_key_case
- Returns an array with all string keys lowercased or uppercased
- array_chunk
- Split an array into chunks
- array_combine
- Creates an array by using one array for keys and another for its values
- array_count_values
- Counts all the values of an array
- array_diff_assoc
- Computes the difference of arrays with additional index check
- array_diff_uassoc
- Computes the difference of arrays with additional index check which is performed by a user supplied callback function
- array_diff
- Computes the difference of arrays
- array_fill
- Fill an array with values
- array_filter
- Filters elements of an array using a callback function
- array_flip
- Exchanges all keys with their associated values in an array
- array_intersect_assoc
- Computes the intersection of arrays with additional index check
- array_intersect
- Computes the intersection of arrays
- array_key_exists
- Checks if the given key or index exists in the array
- array_keys
- Return all the keys of an array
- array_map
- Applies the callback to the elements of the given arrays
- array_merge_recursive
- Merge two or more arrays recursively
- array_merge
- Merge two or more arrays
- array_multisort
- Sort multiple or multi-dimensional arrays
- array_pad
- Pad array to the specified length with a value
- array_pop
- Pop the element off the end of array