I am working with two arrays:
$pool = array(
'foo' => array('foobar1'),
'bar' => array('foobar2'),
'lou' => array('foobar3'),
'zuu' => array('foobar4')
);
$remove = array('lou', 'zuu');
What is the best way to create this new array:
$result = array(
'foo' => array('foobar1'),
'bar' => array('foobar2')
);
Instead of using a foreach loop, I prefer a more concise solution like:
$result = array_intersect_key( $pool, array_flip($remove) );
This code snippet gives me the opposite result:
array(
'lou' => array('foobar3'),
'zuu' => array('foobar4')
);
UPDATE: Here is my single line solution:
array_intersect_key( $pool, array_flip( array_keys( array_diff_key( $pool, array_flip( $remove ) ) ) ) )