Delete same values from both arrays

Question

I have two arrays and I want to delete the same values between the two for example

  $array1 = array(1,2,3,4,5,6)
  $array2 = array(5,6,7,8,9,10)

would have the result

  $array = array(1,2,3,4,7,8,9,10)

I tried

$array = array_unique(array_merge($array1, $array2));

But clearly that just deleted duplicates leaving the matched values, as single values. Is there a quick way to do this or will this have to be done using a function?

Sorry guys, clearly I don't understand arrays. Here are the actual arrays and result of suggestions at the bottom. result should be Coffee and General.

  array(4) {
    [0]=>
    NULL
    [1]=>
    string(4) "Milk"
    [3]=>
    string(6) "Coffee"
    [6]=>
    string(8) "Sweetner"
  }


  array(4) {
    [0]=>
    NULL
    [1]=>
    string(8) "Sweetner"
    [3]=>
    string(4) "MIlk"
    [9]=>
    string(7) "General"
  }


  array(4) {
    [1]=>
    string(4) "Milk"
    [2]=>
    string(6) "Coffee"
    [6]=>
    string(4) "MIlk"
    [7]=>
    string(7) "General"
  }

you can find the common values (array_intersect) in two arrays and then delete those values from both the arrays — Uttara
– Uttara, Commented Aug 24, 2012 at 12:47
Clearly you have a problem with your expectations. The result is correct, only null and Sweetner exist in both arrays and are properly filtered out. The rest are the unique values of both arrays. — deceze
– deceze ♦, Commented Aug 24, 2012 at 13:32

DaveRandom · Accepted Answer · 2012-08-24 12:48:38Z

4

A combination of array_diff(), array_merge() and array_intersect() is what you need here:

$array = array_diff(
  array_merge($array1, $array2),
  array_intersect($array1, $array2)
);

See it working

answered Aug 24, 2012 at 12:48

DaveRandom

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Comments

hsz · Accepted Answer · 2012-08-24 12:48:44Z

2

Try with array_intersect

$intersect = array_intersect($array1, $array2);
$array     = array_diff(array_merge($array1, $array2), $intersect);

answered Aug 24, 2012 at 12:48

hsz

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deceze · Accepted Answer · 2012-08-24 12:49:09Z

1

You want the merge of the difference of both arrays, where "difference" means "values that do not exist in the other array":

$array = array_merge(array_diff($array1, $array2), array_diff($array2, $array1));

answered Aug 24, 2012 at 12:49

deceze♦

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Uladzimir Pasvistselik · Accepted Answer · 2012-08-24 13:02:10Z

0

Only for fun and when your arrays contains string and integer values only:

$array = array_keys(array_flip($array1) + array_flip($array2));

edited Aug 24, 2012 at 13:02

answered Aug 24, 2012 at 12:47

Uladzimir Pasvistselik

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