Indexes an array depending on the values it contains.
/**
*
*/
public function testCombine()
{
$users = [['id' => 1, 'name' => 'a'], ['id' => 2, 'name' => 'b'], ['id' => 3, 'name' => 'b']];
$closure = function ($user) {
(yield $user['name'] => $user['id']);
};
$expected = ['a' => 1, 'b' => 3];
// overwriting existing names
$this->assertEquals($expected, Transform::combine($users, $closure));
$expected = ['a' => 1, 'b' => 2];
// not overwriting existing names
$this->assertEquals($expected, Transform::combine($users, $closure, false));
}
/**
* Builds a media from the given meta tags.
*
* @param array $metas Meta tags.
* @return Media Media.
*/
protected function _media(array $metas)
{
$metas = Transform::combine($metas, function ($Meta) {
(yield $Meta->get('property') => $Meta->get('content'));
});
return new Media($metas);
}
/**
* Builds a media from the given meta tags.
*
* @param array $metas Meta tags.
* @return Media Media.
*/
protected function _media(array $metas)
{
$metas = Transform::combine($metas, function ($Meta) {
(yield $Meta->get($this->_metaAttribute) => $Meta->get('content'));
});
return new Media($metas);
}
/**
* Fetches informations about the given URLs.
*
* @param array $urls An array of URLs to fetch informations from.
* @param array $options Custom options to be interpreted by a provider.
* @return array An array of informations, indexed by URL.
*/
public function extractAll(array $urls, array $options = [])
{
return Transform::combine($urls, function ($url) use($options) {
(yield $url => $this->extract($url, $options));
});
}