从2D数组中删除重复项

Question

I have an array which is 2D and I want to remove duplicates from it,

the var dump look like this 1=>abc.com. 2=>acc.com, 3=>abc.com so I want to remove the second occurence of abc.com, that is I want to remove 3=>abc.com,

I tried to use the nested loop, but the code is not working.

 foreach ($var as $m)
   {
        foreach ($var as $s)
        {
                if(isset($m['Email'])){
                    if($m['Email'] == $s['Email']){
                    echo 'matched with '.$s['Email'];
                    echo '</br>';
                    unset($s);
                    //echo $v['Email'];
                    //echo "<br>";
                }
            }
        }
   }

Am I missing something?

Answer 1

You can just use the array_unique function

Edit: Here is the code and output from Here (Codepad)

PHP

<?php
$input = array("1" => "abc.com", "2" => "acc.com", "3" => "abc.com");
$result = array_unique($input);
print_r($result);
?>

Output

Array
(
    [1] => abc.com
    [2] => acc.com
)

Edit2: To have it remove duplicates from a specific column, just use

$output = array_intersect_key($input, array_unique(array_column($input, 'Email')));

Where $input is the complete array and 'Email' is the column you wish to remove duplicates from