PHP - Array Functions

   array_change_key_case — Changes all keys in an array
   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_key — Computes the difference of arrays using keys for comparison
   array_diff_uassoc — Computes the difference of arrays with additional index check which is performed by a user supplied callback function
   array_diff_ukey — Computes the difference of arrays using a callback function on the keys for comparison
   array_diff — Computes the difference of arrays
   array_fill_keys — Fill an array with values, specifying keys
   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_key — Computes the intersection of arrays using keys for comparison
   array_intersect_uassoc — Computes the intersection of arrays with additional index check, compares indexes by a callback function
   array_intersect_ukey — Computes the intersection of arrays using a callback function on the keys for comparison
   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 or a subset of 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 one 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
   array_product — Calculate the product of values in an array
   array_push — Push one or more elements onto the end of array
   array_rand — Pick one or more random entries out of an array
   array_reduce — Iteratively reduce the array to a single value using a callback function
   array_replace_recursive — Replaces elements from passed arrays into the first array recursively
   array_replace — Replaces elements from passed arrays into the first array
   array_reverse — Return an array with elements in reverse order
   array_search — Searches the array for a given value and returns the corresponding key if successful
   array_shift — Shift an element off the beginning of array
   array_slice — Extract a slice of the array
   array_splice — Remove a portion of the array and replace it with something else
   array_sum — Calculate the sum of values in an array
   array_udiff_assoc — Computes the difference of arrays with additional index check, compares data by a callback function
   array_udiff_uassoc — Computes the difference of arrays with additional index check, compares data and indexes by a callback function
   array_udiff — Computes the difference of arrays by using a callback function for data comparison
   array_uintersect_assoc — Computes the intersection of arrays with additional index check, compares data by a callback function
   array_uintersect_uassoc — Computes the intersection of arrays with additional index check, compares data and indexes by a callback functions
   array_uintersect — Computes the intersection of arrays, compares data by a callback function
   array_unique — Removes duplicate values from an array
   array_unshift — Prepend one or more elements to the beginning of an array
   array_values — Return all the values of an array
   array_walk_recursive — Apply a user function recursively to every member of an array
   array_walk — Apply a user function to every member of an array
   array — Create an array
   arsort — Sort an array in reverse order and maintain index association
   asort — Sort an array and maintain index association
   compact — Create array containing variables and their values
   count — Count all elements in an array, or something in an object
   current — Return the current element in an array
   each — Return the current key and value pair from an array and advance the array cursor
   end — Set the internal pointer of an array to its last element
   extract — Import variables into the current symbol table from an array
   in_array — Checks if a value exists in an array
   key — Fetch a key from an array
   krsort — Sort an array by key in reverse order
   ksort — Sort an array by key
   list — Assign variables as if they were an array
   natcasesort — Sort an array using a case insensitive "natural order" algorithm
   natsort — Sort an array using a "natural order" algorithm
   next — Advance the internal array pointer of an array
   pos — Alias of current
   prev — Rewind the internal array pointer
   range — Create an array containing a range of elements
   reset — Set the internal pointer of an array to its first element
   rsort — Sort an array in reverse order
   shuffle — Shuffle an array
   sizeof — Alias of count
   sort — Sort an array
   uasort — Sort an array with a user-defined comparison function and maintain index association
   uksort — Sort an array by keys using a user-defined comparison function
   usort — Sort an array by values using a user-defined comparison function