arrays.php

<?php

// declaring arrays
$my_array = ['BMW', 'Kia', 'Audi'];

// declaring associative arrays
$grades = [
    'hani'  =>  [22, 44, 55],
    'ali'   =>  [100, 100, 100],
    'musa'  =>  [99, 99, 99]
];

// looping through multidimensional arrays
foreach ($grades as $key => $value) {
    echo $key . ' is ';
    foreach ($value as $item) {
        echo $item . ' | ';
    }
    echo '<br>';
}

// another way of declaring arrays
$arr = [];
$arr['hani'] = 28;
$arr['ali'] = 26;

// debugging array values
echo '<pre>';
print_r($grades);
echo '</pre>';