Arrays

• array_multisort (arr, arg, arg, ...) - Sort multiple or multi-dimensional arrays
• arsort (array, sort_flags) - Sort an array in reverse order and maintain index association
• asort (array, sort_flags) - Sort an array and maintain index association
• krsort (array, sort_flags) - Sort an array by key in reverse order
• ksort (array, sort_flags) - Sort an array by key
• natcasesort (array) - Sort an array using a case insensitive "natural order" algorithm
• natsort (array) - Sort an array using a "natural order" algorithm
• rsort (array, sort_flags) - Sort an array in reverse order
• sort (array, sort_flags) - Sort an array
• uasort (array, cmp_function) - Sort an array with a user-defined comparison function and maintain index association
• uksort (array, cmp_function) - Sort an array by keys using a user-defined comparison function
• usort (array, cmp_function) - Sort an array by values using a user-defined comparison function

• array_walk (array, funcname, userdata) - Apply a user function to every member of an array
• current (array) - Return the current element in an array
• each (array) - Return the current key and value pair from an array and advance the array cursor
• end (array) - Set the internal pointer of an array to its last element
• key (array) - Fetch a key from an array
• next (array) - Advance the internal array pointer of an array
• reset (array) - Set the internal pointer of an array to its first element

• array_diff (array1, array2, ...) - Computes the difference of arrays
• array_intersect (array1, array2, ...) - Computes the intersection of arrays
• array_merge (array1, array2, ...) - Merge one or more arrays
• array_merge_recursive (array1, ...) - Merge two or more arrays recursively
• array_slice (array, offset, length, preserve_keys) - Extract a slice of the array
• array_splice (input, offset, length, replacement) - Remove a portion of the array and replace it with something else

• array (input, offset, length, replacement) - Create an array
• array_change_key_case (input, case) - Changes all keys in an array
• array_chunk (input, size, preserve_keys) - Split an array into chunks
• array_combine (keys, values) - Creates an array by using one array for keys and another for its values
• array_count_values (input) - Counts all the values of an array
• array_diff_assoc (array1, array2, ...) - Computes the difference of arrays with additional index check
• array_diff_key (array1, array2, ...) - Computes the difference of arrays using keys for comparison
• array_diff_uassoc (array1, array2, ..., key_compare_func) - Computes the difference of arrays with additional index check which is performed by a user supplied callback function
• array_diff_ukey (array1, array2, ..., key_compare_func) - Computes the difference of arrays using a callback function on the keys for comparison
• array_fill (start_index, num, value) - Fill an array with values
• array_fill_keys (keys, value) - Fill an array with values, specifying keys
• array_filter (input, callback) - Filters elements of an array using a callback function
• array_flip (trans) - Exchanges all keys with their associated values in an array
• array_intersect_assoc (array1, array2, ...) - Computes the intersection of arrays with additional index check
• array_intersect_key (array1, array2, ...) - Computes the intersection of arrays using keys for comparison
• array_intersect_uassoc (array1, array2, ..., key_compare_func) - Computes the intersection of arrays with additional index check, compares indexes by a callback function
• array_intersect_ukey (array1, array2, ..., key_compare_func) - Computes the intersection of arrays using a callback function on the keys for comparison
• array_keys (input, search_value, strict) - Return all the keys of an array
• array_key_exists (key, search) - Checks if the given key or index exists in the array
• array_map (callback, arr1, ...) - Applies the callback to the elements of the given arrays
• array_pad (input, pad_size, pad_value) - Pad array to the specified length with a value
• array_pop (array) - Pop the element off the end of array
• array_product (array) - Calculate the product of values in an array
• array_push (array, var, ...) - Push one or more elements onto the end of array
• array_rand (input, num_req) - Pick one or more random entries out of an array
• array_reduce (input, function, initial) - Iteratively reduce the array to a single value using a callback function
• array_replace (array, array1, array2, ...) - Replaces elements from passed arrays into the first array
• array_replace_recursive (array, array1, array2, ...) - Replaces elements from passed arrays into the first array recursively
• array_reverse (array, preserve_keys) - Return an array with elements in reverse order
• array_search (needle, haystack, strict) - Searches the array for a given value and returns the corresponding key if successful
• array_shift (array) - Shift an element off the beginning of array
• array_sum (array) - Calculate the sum of values in an array
• array_udiff (array1, array2, ..., data_compare_func) - Computes the difference of arrays by using a callback function for data comparison
• array_udiff_assoc (array1, array2, ..., data_compare_func) - Computes the difference of arrays with additional index check, compares data by a callback function
• array_udiff_uassoc (array1, array2, ..., data_compare_func, key_compare_func) - Computes the difference of arrays with additional index check, compares data and indexes by a callback function
• array_uintersect (array1, array2, ..., data_compare_func) - Computes the intersection of arrays, compares data by a callback function
• array_uintersect_assoc (array1, array2, ..., data_compare_func) - Computes the intersection of arrays with additional index check, compares data by a callback function
• array_uintersect_uassoc (array1, array2, ..., data_compare_func, key_compare_func) - Computes the intersection of arrays with additional index check, compares data and indexes by a callback functions
• array_unique (array, sort_flags) - Removes duplicate values from an array
• array_unshift (array, var, ...) - Prepend one or more elements to the beginning of an array
• array_values (input) - Return all the values of an array
• array_walk_recursive (input, funcname, userdata) - Apply a user function recursively to every member of an array
• compact (varname, ...) - Create array containing variables and their values
• count (var, mode) - Count all elements in an array, or properties in an object
• extract (var_array, extract_type, prefix) - Import variables into the current symbol table from an array
• in_array (needle, haystack, strict) - Checks if a value exists in an array
• list (varname, ...) - Assign variables as if they were an array
• pos (varname, ...) - Alias of current()
• prev (array) - Rewind the internal array pointer
• range (low, high, step) - Create an array containing a range of elements
• shuffle (array) - Shuffle an array
• sizeof (array) - Alias of count()