(PHP 4, PHP 5, PHP 7) Apply a user supplied function to every member of an array bool array_walk ( array &$array, callable $callback [, mixed $userdata = NULL ] ) Applies the user-defined callback function to each element of the array array. array_walk() is not affected by the internal array pointer of array. array_walk() will walk through the entire array regardless of pointer position. Parameters:

(PHP 5, PHP 7) Apply a user function recursively to every member of an array bool array_walk_recursive ( array &$array, callable $callback [, mixed $userdata = NULL ] ) Applies the user-defined callback function to each element of the array. This function will recurse into deeper arrays. Parameters: array The input array. callback

(PHP 4, PHP 5, PHP 7) Return all the values of an array array array_values ( array $array ) array_values() returns all the values from the array and indexes the array numerically. Parameters: array The array. Returns: Returns an indexed array of values. Examples: array_values() exampl

(PHP 4, PHP 5, PHP 7) Prepend one or more elements to the beginning of an array int array_unshift ( array &$array, mixed $value1 [, mixed $... ] ) array_unshift() prepends passed elements to the front of the array. Note that the list of elements is prepended as a whole, so that the prepended elements stay in the same order. All numerical array keys will be modified to start counting from zero while literal keys won't be

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Removes duplicate values from an array array array_unique ( array $array [, int $sort_flags = SORT_STRING ] ) Takes an input array and returns a new array without duplicate values. Note that keys are preserved. array_unique() sorts the values treated as string at first, then will keep the first key encountered for every value, and ignore all following keys. It does not mean that the key o

(PHP 5, PHP 7) Computes the intersection of arrays, compares data by a callback function array array_uintersect ( array $array1, array $array2 [, array $... ], callable $value_compare_func ) Computes the intersection of arrays, compares data by a callback function. Parameters: array1 The first array. array2 The second array.

(PHP 5, PHP 7) Computes the intersection of arrays with additional index check, compares data and indexes by separate callback functions array array_uintersect_uassoc ( array $array1, array $array2 [, array $... ], callable $value_compare_func, callable $key_compare_func ) Computes the intersection of arrays with additional index check, compares data and indexes by separate callback functions. Parameters:

(PHP 5, PHP 7) Computes the intersection of arrays with additional index check, compares data by a callback function array array_uintersect_assoc ( array $array1, array $array2 [, array $... ], callable $value_compare_func ) Computes the intersection of arrays with additional index check, compares data by a callback function. Note that the keys are used in the comparison unlike in array_uintersect(). The data is compared b

(PHP 5, PHP 7) Computes the difference of arrays by using a callback function for data comparison array array_udiff ( array $array1, array $array2 [, array $... ], callable $value_compare_func ) Computes the difference of arrays by using a callback function for data comparison. This is unlike array_diff() which uses an internal function for comparing the data. Parameters: array1

(PHP 5, PHP 7) Computes the difference of arrays with additional index check, compares data and indexes by a callback function array array_udiff_uassoc ( array $array1, array $array2 [, array $... ], callable $value_compare_func, callable $key_compare_func ) Computes the difference of arrays with additional index check, compares data and indexes by a callback function. Note that the keys are used in the comparison unlike a