Array Duplicate Check

$arrs = array(
    'a'=>'Abid',
    'b'=>'Babul',
    'c'=>'Jamal',
    'd'=>'Kamrul',
    'e'=>'Rana',
    'f'=>'Mamun',
    'g'=>'Babul',
    'h'=>'Akram',
    'i'=>'Kamrul'
);

echo 'Before Duplicate Check';
echo '<pre>';
print_r($arrs);
echo '</pre>';



// Duplicate check
$without_duplicate = array();
foreach($arrs as $arr){
    if(!in_array($arr,$without_duplicate)){
        //array_push($without_duplicate,$arr);
        $without_duplicate[] = $arr;
    }
}
echo 'After Duplicate Check';
echo '<pre>';
print_r($without_duplicate);
echo '</pre>';