<?php
/**
* laravel 方法
* User: Zip
* Date: 15/4/20
* Time: 下午2:49
*/
namespace Hood\Core\Support;
class Arr
{
/**
* Add an element to an array using "dot" notation if it doesn't exist.
*
* @param array $array
* @param string $key
* @param mixed $value
* @return array
*/
public static function add($array, $key, $value)
{
if (is_null(static::get($array, $key))) {
static::set($array, $key, $value);
}
return $array;
}
/**
* Build a new array using a callback.
*
* @param array $array
* @param \Closure $callback
* @return array
*/
public static function build($array, Closure $callback)
{
$results = array();
foreach ($array as $key => $value) {
list($innerKey, $innerValue) = call_user_func($callback, $key, $value);
$results[$innerKey] = $innerValue;
}
return $results;
}
/**
* Divide an array into two arrays. One with keys and the other with values.
*
* @param array $array
* @return array
*/
public static function divide($array)
{
return array(array_keys($array), array_values($array));
}
/**
* Flatten a multi-dimensional associative array with dots.
*
* @param array $array
* @param string $prepend
* @return array
*/
public static function dot($array, $prepend = '')
{
$results = array();
foreach ($array as $key => $value) {
if (is_array($value)) {
$results = array_merge($results, static::dot($value, $prepend . $key . '.'));
} else {
$results[$prepend . $key] = $value;
}
}
return $results;
}
/**
* Get all of the given array except for a specified array of items.
*
* @param array $array
* @param array|string $keys
* @return array
*/
public static function except($array, $keys)
{
return array_diff_key($array, array_flip((array)$keys));
}
/**
* Fetch a flattened array of a nested array element.
*
* @param array $array
* @param string $key
* @return array
*/
public static function fetch($array, $key)
{
foreach (explode('.', $key) as $segment) {
$results = array();
foreach ($array as $value) {
$value = (array)$value;
$results[] = $value[$segment];
}
$array = array_values($results);
}
return array_values($results);
}
/**
* Return the first element in an array passing a given truth test.
*
* @param array $array
* @param \Closure $callback
* @param mixed $default
* @return mixed
*/
public static function first($array, $callback, $default = null)
{
foreach ($array as $key => $value) {
if (call_user_func($callback, $key, $value)) return $value;
}
return value($default);
}
/**
* Return the last element in an array passing a given truth test.
*
* @param array $array
* @param \Closure $callback
* @param mixed $default
* @return mixed
*/
public static function last($array, $callback, $default = null)
{
return static::first(array_reverse($array), $callback, $default);
}
/**
* Flatten a multi-dimensional array into a single level.
*
* @param array $array
* @return array
*/
public static function flatten($array)
{
$return = array();
array_walk_recursive($array, function ($x) use (&$return) {
$return[] = $x;
});
return $return;
}
/**
* Remove one or many array items from a given array using "dot" notation.
*
* @param array $array
* @param array|string $keys
* @return void
*/
public static function forget(&$array, $keys)
{
$original =& $array;
foreach ((array)$keys as $key) {
$parts = explode('.', $key);
while (count($parts) > 1) {
$part = array_shift($parts);
if (isset($array[$part]) && is_array($array[$part])) {
$array =& $array[$part];
}
}
unset($array[array_shift($parts)]);
// clean up after each pass
$array =& $original;
}
}
/**
* Get an item from an array using "dot" notation.
*
* @param array $array
* @param string $key
* @param mixed $default
* @return mixed
*/
public static function get($array, $key, $default = null)
{
if (is_null($key)) return $array;
if (isset($array[$key])) return $array[$key];
foreach (explode('.', $key) as $segment) {
if (!is_array($array) || !array_key_exists($segment, $array)) {
return self::value($default);
}
$array = $array[$segment];
}
return $array;
}
public static function value($value)
{
return $value instanceof \Closure ? $value() : $value;
}
/**
* Get a subset of the items from the given array.
*
* @param array $array
* @param array|string $keys
* @return array
*/
public static function only($array, $keys)
{
return array_intersect_key($array, array_flip((array)$keys));
}
/**
* Pluck an array of values from an array.
*
* @param array $array
* @param string $value
* @param string $key
* @return array
*/
public static function pluck($array, $value, $key = null)
{
$results = array();
foreach ($array as $item) {
$itemValue = is_object($item) ? $item->{$value} : $item[$value];
if (is_null($key)) {
$results[] = $itemValue;
} else {
$itemKey = is_object($item) ? $item->{$key} : $item[$key];
$results[$itemKey] = $itemValue;
}
}
return $results;
}
/**
* Get a value from the array, and remove it.
*
* @param array $array
* @param string $key
* @param mixed $default
* @return mixed
*/
public static function pull(&$array, $key, $default = null)
{
$value = static::get($array, $key, $default);
static::forget($array, $key);
return $value;
}
/**
* Set an array item to a given value using "dot" notation.
*
* If no key is given to the method, the entire array will be replaced.
*
* @param array $array
* @param string $key
* @param mixed $value
* @return array
*/
public static function set(&$array, $key, $value)
{
if (is_null($key)) return $array = $value;
$keys = explode('.', $key);
while (count($keys) > 1) {
$key = array_shift($keys);
// If the key doesn't exist at this depth, we will just create an empty array
// to hold the next value, allowing us to create the arrays to hold final
// values at the correct depth. Then we'll keep digging into the array.
if (!isset($array[$key]) || !is_array($array[$key])) {
$array[$key] = array();
}
$array =& $array[$key];
}
$array[array_shift($keys)] = $value;
return $array;
}
/**
* Sort the array using the given Closure.
*
* @param array $array
* @param \Closure $callback
* @return array
*/
public static function sort($array, Closure $callback)
{
return Collection::make($array)->sortBy($callback)->all();
}
/**
* Filter the array using the given Closure.
*
* @param array $array
* @param \Closure $callback
* @return array
*/
public static function where($array, Closure $callback)
{
$filtered = array();
foreach ($array as $key => $value) {
if (call_user_func($callback, $key, $value)) $filtered[$key] = $value;
}
return $filtered;
}
}