how do you replace an array with another array without deleting unmatch keys in first array?

Question

Array1:

array('key01'=>321312, 'key03'=>23)

Array2:

array('key01'=>22, 'key04'=>78, 'key05'=>54)

I'm trying to to replace the values if array1 with the values of array2 and leaving any keys untouched that are not in array2.

So the outcome would be:

array('key01'=>22, 'key03'=>23, 'key04'=>78, 'key05'=>54)

you are not replacing then you are wanting to merge, use the array_merge like Barmar mentions. — Patrick Evans
– Patrick Evans, Commented Jul 24, 2013 at 20:09

jh314 · Accepted Answer · 2013-07-24 20:11:40Z

1

You can use array_merge:

$a1 = array('key01'=>321312, 'key03'=>23);
$a2 = array('key01'=>22, 'key04'=>78, 'key05'=>54);
print_r(array_merge($a1,$a2));

answered Jul 24, 2013 at 20:11

jh314

27.9k16 gold badges66 silver badges83 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Expedito · Accepted Answer · 2013-07-24 20:24:09Z

1

$arr1 = $arr2 + $arr1;

The keys will remain as you said:

$arr1 = array('key01'=>22, 'key04'=>78, 'key05'=>54, 'key03'=>23);

But the order is important. In the case above, $arr2, being first, will overwrite values with the same key of $arr1.

answered Jul 24, 2013 at 20:11

Expedito

7,8095 gold badges32 silver badges45 bronze badges