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Editorial Team
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Asked: 2026-06-17T00:16:21+00:00

Lets say I have two arrays – $EmailList1 = array(abc@domain1.com, def@domain2.com, ghi@domain3.com); $EmailList2 =

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Lets say I have two arrays – 

$EmailList1 = array("abc@domain1.com", "def@domain2.com", "ghi@domain3.com");
$EmailList2 = array("jkl@domain1.com", "mno@domain4.com", "pqr@domain5.com");

Now I’d like my new array to be [mno@domain4.com, pqr@domain5.com]

The reason jkl@domain1.com was omitted because it has domain (domain1.com) which already is present in $EmailList1

My approach would be to first get all the domains of $EmailList1, storing it into an array, looping through each item of $EmailList2 and then getting the result.

Is this the right way or there could be a better way ?

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1 Answer

  1. Editorial Team

    All you need is 

    $EmailList1 = array("abc@domain1.com","def@domain2.com","ghi@domain3.com");
$EmailList2 = array("jkl@domain1.com","mno@domain4.com","pqr@domain5.com");

$diff = array_udiff($EmailList2, $EmailList1, function ($a, $b) {
    return strstr($a, '@') === strstr($b, '@') ? 0 : 1;
});

echo "<pre>";
var_dump($diff);

    Output 

    array (size=2)
  1 => string 'mno@domain4.com' (length=15)
  2 => string 'pqr@domain5.com' (length=15)
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