PHP gets the key values for a few columns of an array

For example, $ A = array (a,b,c,d,e); want to get $b = Array (a,c,d) how to get

Reply to discussion (solution)

The simplest

$a = Array (a,b,c,d,e), $b = array ($a [0], $a [2], $a [3]);

The simplest

$a = Array (a,b,c,d,e), $b = array ($a [0], $a [2], $a [3]);

$a is a multidimensional array, so that is to get the dimension, and not get the value of the sequence of the key

What does that mean?

$a = Array (' A ', ' B ', ' C ', ' d ', ' e '), $b = $b = Array (' A ', ' C ', ' d ');p Rint_r (Array_intersect ($a, $b));

Array
(
[0] = a
[2] = C
[3] = d
)

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