http://www.php.net/extract
http://www.php.net/compact
// extract()
$array = ['k' => 'v', 'k2' => 'v2'];
extract($array); // 第二、第三引数次第で、接頭辞の指定もできます
echo $k, $k2; // vv2
// compact()
$x = 'X';
$y = 'Y';
print_r(compact('x', 'y'));
/*
Array
(
[x] => X
[y] => Y
)
*/
print_r(compact(['x', 'y']));
/*
Array
(
[x] => X
[y] => Y
)
*/
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