CODEWITHSUNDEEP
phparrayscomparison
Marcin Lawniczak
Marcin Lawniczak

Reputation: 108

How to get differences between two arrays, like a diff (added, deleted)?

I have two snapshots of data, in arrays, such as this:

Array number 1:

array{
    'foo' => 'foo_value',
    'bar' => 'bar_value',
    'baz' => 'baz_value'
}

Array number 2:

array{
    'foo' => 'foo_value_new',
    'bar' => 'bar_value',
    'baz' => 'baz_value',
    'xyz' => 'added_value'
}

I want to get two arrays, one with added elements, one with deleted ones:

Array with added new data:

array{
    'foo' => 'foo_value_new',
    'xyz' => 'added_value'
}

Array with deleted data:

array{
    'foo' => 'foo_value',
}

How could this be archieved in php? Do any array_* functions have similar behaviour?

Upvotes: 1

Views: 190

Answers (1)

Rakesh Sharma
Rakesh Sharma

Reputation: 13728

I think there is not any inbuilt function to return two array try a simple way

 $str = array(
    'foo' => 'foo_value',
    'bar' => 'bar_value',
    'baz' => 'baz_value'
);
$str1=array(
    'foo' => 'foo_value_new',
    'bar' => 'bar_value',
    'baz' => 'baz_value',
    'xyz' => 'added_value'
);
$add= array_merge(array_diff($str, $str1), array_diff($str1, $str));
print_r($add);//Array ( [foo] => foo_value_new [xyz] => added_value )

$del = array_diff($str, $str1);
print_r($del); //Array ( [foo] => foo_value )

Upvotes: 3

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