Using function array_intersect_key

[zorgi]

I have a question but not a problem.

I have 2 arrays.

$array_1 = array("a", "b");
$array_2 = array("a" => "x1", "b" => "x2", "c" => "x3");
 

Is there php function that would return array("a" => "x1", "b" => "x2") if passed $array_1 and $array_2 or I have to write it. Looked at the manual and couldn't find it.

Thanks

[Dormilich]

you don’t need a whole new function…

array_intersect_key($array_2, array_flip($array_1));

[code green]

Try array_intersect_key() for this one

array array_intersect_key ( array array1, array array2 [, array ...] )

array_intersect_key() returns an array containing all the values of array1 which have matching keys that are present in all the arguments.

But you will need to array_flip() $array1 to make values the key. So...

array_intersect_key($array2,array_filp($array1);

..I think

[Dormilich]

@code green
I’ve tested that, it works.

[zorgi]

Excellent

Thank you

[code green]

Dormilich. You pipped me by one minute. But same solution.

[Dormilich]

it’s the obvious solution, after all.