It's late and I know it is a very simple question but right now I do not have an idea and deadline is near..
I've got two arrays:
$array1 = array(
'a' => 'asdasd',
'b' => 'gtrgrtg',
'c' => 'fwefwefw',
'd' => 'trhrtgr',
);
$array2 = array(
'b', 'c'
);
What was the name of function to get a part of assoc array by keys from the second array ?
$result = array(
'b' => 'gtrgrtg',
'c' => 'fwefwefw',
);
Thanks !
Try this:
array_intersect_key($array1, array_flip($array2)).
I think there's no such function, so I will implement one:
function array_filter_keys($array, $keys) {
$newarray = array();
foreach ($keys as $key) {
if (array_key_exists($key, $array)) $newarray[$key] = $array[$key];
}
return $newarray;
}
I'm curious to see if there's a built in that does this. Here's how I would do it.
$result = array();
foreach ($array2 as $key) {
if (array_key_exists($key, $array1) {
$result[$key] = $array1[$key];
}
}
