FeST1VaL

$array1 = [
["Orange","medium"],
["Orange","big"],
["Apple","big"],
["Banane",false],
["Apple","big"],
];

$array2 = ["Apple","big"];

$index = array_search($array2,$array1);

if($index !== false) unset($array1[$index]);

var_dump($array1);

SELECT `address` FROM `users` WHERE `username` = '$username'

$city = [
    'name' => 'Azn',
    $streets => [
        'name' => 'Firas street',
        'buildings_count' => '15',
        'old_buildings' => [1, 3, 4]
    ],
    [
        'name' => 'second street',
        'buildings_count' => '25',
        'old_buildings' => [5, 7, 9],
    ]
];

foreach($values as $book) {
 echo '<li>'.$book.'</li>';
}