从关联中删除某些键。 排列

Question

I have two arrays:

$pool = array(
     'foo' => array('foobar1'),
     'bar' => array('foobar2'),
     'lou' => array('foobar3'),
     'zuu' => array('foobar4') 
);

$remove = array('lou', 'zuu');

How do I get this array:

$result = array(
     'foo' => array('foobar1'),
     'bar' => array('foobar2')
);

I can do a foreach loop but I like a more elegant solution like

$result = array_intersect_key( $pool, array_flip($remove) );

which gives me the other way:

array(
     'lou' => array('foobar3'),
     'zuu' => array('foobar4')
);

EDIT: my one line solution is:

array_intersect_key( $pool, array_flip( array_keys( array_diff_key( $pool, array_flip( $remove ) ) ) ) )

Answer 1

try this then

 $pool = array(
     'foo' => array('foobar1'),
     'bar' => array('foobar2'),
     'lou' => array('foobar3'),
     'zuu' => array('foobar4') 
);

$remove = array('lou', 'zuu');
$compare=array_diff_key($pool, array_flip($remove));
var_dump(array_intersect_key($pool,$compare));