/**
*
* @test
* @dataProvider providerMap
*/
public function testMap($method, $source, $keys, $expected)
{
$this->assertSame($expected, Arr::map($method, $source, $keys));
}
/**
* Recursive version of [array_map](http://php.net/array_map), applies one or more
* callbacks to all elements in an array, including sub-arrays.
*
* // Apply "strip_tags" to every element in the array
* $array = Arr::map('strip_tags', $array);
*
* // Apply $this->filter to every element in the array
* $array = Arr::map(array(array($this,'filter')), $array);
*
* // Apply strip_tags and $this->filter to every element
* $array = Arr::map(array('strip_tags',array($this,'filter')), $array);
*
* [!!] Because you can pass an array of callbacks, if you wish to use an array-form callback
* you must nest it in an additional array as above. Calling Arr::map(array($this,'filter'), $array)
* will cause an error.
* [!!] Unlike `array_map`, this method requires a callback and will only map
* a single array.
*
* @param mixed $callbacks array of callbacks to apply to every element in the array
* @param array $array array to map
* @param array $keys array of keys to apply to
* @return array
*/
public static function map($callbacks, $array, $keys = null)
{
foreach ($array as $key => $val) {
if (is_array($val)) {
$array[$key] = Arr::map($callbacks, $array[$key]);
} elseif (!is_array($keys) || in_array($key, $keys)) {
if (is_array($callbacks)) {
foreach ($callbacks as $cb) {
$array[$key] = call_user_func($cb, $array[$key]);
}
} else {
$array[$key] = call_user_func($callbacks, $array[$key]);
}
}
}
return $array;
}