i want to create dynamic json array.
i am using this array :
$d = array(
'key1' => 9,
'key2' => 10,
'key3' => 20,
'key4' => 60,
'key5' => 50,
);
and i can decode this json and using it in my project.
But now i have to take some of them in this array. For example i have to use key3 and key5 and rebuild my json array.
You can use array_intersect_key:
<?php
$d = array(
'key1' => 9,
'key2' => 10,
'key3' => 20,
'key4' => 60,
'key5' => 50,
);
print_r(array_intersect_key($d, ['key3'=>'','key5'=>'']));
Result:
Array
(
[key3] => 20
[key5] => 50
)
If you want to get fancy, you could also add in array_flip:
<?php
$d = array(
'key1' => 9,
'key2' => 10,
'key3' => 20,
'key4' => 60,
'key5' => 50,
);
$desiredKeys = ['key3','key5'];
$result = array_intersect_key($d, array_flip($desiredKeys));
print_r($result);
