385 lines
9.1 KiB
PHP
385 lines
9.1 KiB
PHP
<?php
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namespace Yansongda\Supports;
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use Closure;
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/**
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* Array helper from Illuminate\Support\Arr.
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*/
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class Arr
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{
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/**
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* Add an element to an array using "dot" notation if it doesn't exist.
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*
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* @param array $array
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* @param string $key
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* @param mixed $value
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*
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* @return array
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*/
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public static function add($array, $key, $value)
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{
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if (is_null(static::get($array, $key))) {
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static::set($array, $key, $value);
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}
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return $array;
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}
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/**
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* Build a new array using a callback.
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*
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* @param array $array
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*
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* @return array
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*/
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public static function build($array, Closure $callback)
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{
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$results = [];
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foreach ($array as $key => $value) {
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list($innerKey, $innerValue) = call_user_func($callback, $key, $value);
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$results[$innerKey] = $innerValue;
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}
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return $results;
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}
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/**
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* Divide an array into two arrays. One with keys and the other with values.
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*
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* @param array $array
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*
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* @return array
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*/
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public static function divide($array)
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{
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return [
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array_keys($array),
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array_values($array),
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];
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}
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/**
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* Flatten a multi-dimensional associative array with dots.
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*
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* @param array $array
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* @param string $prepend
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*
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* @return array
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*/
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public static function dot($array, $prepend = '')
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{
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$results = [];
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foreach ($array as $key => $value) {
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if (is_array($value)) {
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$results = array_merge($results, static::dot($value, $prepend.$key.'.'));
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} else {
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$results[$prepend.$key] = $value;
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}
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}
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return $results;
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}
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/**
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* Get all of the given array except for a specified array of items.
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*
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* @param array $array
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* @param array|string $keys
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*
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* @return array
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*/
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public static function except($array, $keys)
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{
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return array_diff_key($array, array_flip((array) $keys));
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}
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/**
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* Fetch a flattened array of a nested array element.
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*
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* @param array $array
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* @param string $key
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*
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* @return array
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*/
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public static function fetch($array, $key)
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{
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$results = [];
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foreach (explode('.', $key) as $segment) {
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$results = [];
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foreach ($array as $value) {
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$value = (array) $value;
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$results[] = $value[$segment];
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}
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$array = array_values($results);
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}
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return array_values($results);
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}
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/**
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* Return the first element in an array passing a given truth test.
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*
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* @param array $array
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* @param Closure $callback
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* @param mixed $default
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*
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* @return mixed
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*/
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public static function first($array, $callback, $default = null)
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{
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foreach ($array as $key => $value) {
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if (call_user_func($callback, $key, $value)) {
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return $value;
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}
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}
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return $default;
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}
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/**
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* Return the last element in an array passing a given truth test.
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*
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* @param array $array
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* @param Closure $callback
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* @param mixed $default
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*
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* @return mixed
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*/
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public static function last($array, $callback, $default = null)
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{
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return static::first(array_reverse($array), $callback, $default);
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}
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/**
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* Flatten a multi-dimensional array into a single level.
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*
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* @param array $array
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*
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* @return array
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*/
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public static function flatten($array)
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{
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$return = [];
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array_walk_recursive(
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$array,
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function ($x) use (&$return) {
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$return[] = $x;
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}
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);
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return $return;
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}
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/**
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* Remove one or many array items from a given array using "dot" notation.
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*
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* @param array $array
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* @param array|string $keys
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*/
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public static function forget(&$array, $keys)
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{
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$original = &$array;
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foreach ((array) $keys as $key) {
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$parts = explode('.', $key);
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while (count($parts) > 1) {
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$part = array_shift($parts);
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if (isset($array[$part]) && is_array($array[$part])) {
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$array = &$array[$part];
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}
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}
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unset($array[array_shift($parts)]);
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// clean up after each pass
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$array = &$original;
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}
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}
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/**
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* Get an item from an array using "dot" notation.
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*
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* @param array $array
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* @param string $key
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* @param mixed $default
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*
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* @return mixed
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*/
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public static function get($array, $key, $default = null)
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{
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if (is_null($key)) {
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return $array;
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}
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if (isset($array[$key])) {
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return $array[$key];
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}
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foreach (explode('.', $key) as $segment) {
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if (!is_array($array) || !array_key_exists($segment, $array)) {
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return $default;
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}
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$array = $array[$segment];
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}
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return $array;
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}
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/**
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* Get a subset of the items from the given array.
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*
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* @param array $array
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* @param array|string $keys
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*
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* @return array
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*/
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public static function only($array, $keys)
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{
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return array_intersect_key($array, array_flip((array) $keys));
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}
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/**
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* Pluck an array of values from an array.
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*
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* @param array $array
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* @param string $value
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* @param string $key
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*
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* @return array
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*/
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public static function pluck($array, $value, $key = null)
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{
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$results = [];
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foreach ($array as $item) {
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$itemValue = is_object($item) ? $item->{$value} : $item[$value];
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// If the key is "null", we will just append the value to the array and keep
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// looping. Otherwise we will key the array using the value of the key we
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// received from the developer. Then we'll return the final array form.
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if (is_null($key)) {
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$results[] = $itemValue;
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} else {
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$itemKey = is_object($item) ? $item->{$key} : $item[$key];
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$results[$itemKey] = $itemValue;
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}
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}
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return $results;
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}
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/**
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* Get a value from the array, and remove it.
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*
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* @param array $array
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* @param string $key
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* @param mixed $default
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*
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* @return mixed
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*/
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public static function pull(&$array, $key, $default = null)
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{
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$value = static::get($array, $key, $default);
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static::forget($array, $key);
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return $value;
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}
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/**
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* Set an array item to a given value using "dot" notation.
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*
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* If no key is given to the method, the entire array will be replaced.
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*
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* @param array $array
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* @param string $key
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* @param mixed $value
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*
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* @return array
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*/
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public static function set(&$array, $key, $value)
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{
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if (is_null($key)) {
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return $array = $value;
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}
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$keys = explode('.', $key);
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while (count($keys) > 1) {
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$key = array_shift($keys);
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// If the key doesn't exist at this depth, we will just create an empty array
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// to hold the next value, allowing us to create the arrays to hold final
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// values at the correct depth. Then we'll keep digging into the array.
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if (!isset($array[$key]) || !is_array($array[$key])) {
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$array[$key] = [];
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}
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$array = &$array[$key];
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}
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$array[array_shift($keys)] = $value;
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return $array;
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}
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/**
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* Sort the array using the given Closure.
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*
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* @param array $array
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*
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* @return array
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*/
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public static function sort($array, Closure $callback)
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{
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$results = [];
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foreach ($array as $key => $value) {
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$results[$key] = $callback($value);
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}
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return $results;
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}
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/**
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* Filter the array using the given Closure.
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*
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* @param array $array
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*
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* @return array
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*/
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public static function where($array, Closure $callback)
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{
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$filtered = [];
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foreach ($array as $key => $value) {
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if (call_user_func($callback, $key, $value)) {
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$filtered[$key] = $value;
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}
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}
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return $filtered;
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}
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/**
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* Convert encoding.
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*
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* @author yansongda <me@yansongda.cn>
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*
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* @param array $array
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* @param string $to_encoding
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* @param string $from_encoding
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*
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* @return array
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*/
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public static function encoding($array, $to_encoding, $from_encoding = 'gb2312')
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{
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$encoded = [];
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foreach ($array as $key => $value) {
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$encoded[$key] = is_array($value) ? self::encoding($value, $to_encoding, $from_encoding) :
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mb_convert_encoding($value, $to_encoding, $from_encoding);
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}
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return $encoded;
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}
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}
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