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array (
    array (elements...),
    array (elements...),
    ...
)

<?php
// Two-dimensional array:
$cars = array
(
    array("Volvo",100,96),
    array("BMW",60,59),
    array("Toyota",110,100)
);
?>

<?php
$sites = array
(
    "tutorialpro" => array
    (
        "tutorialpro.org",
        "http://www.tutorialpro.org"
    ),
    "google" => array
    (
        "Google Search",
        "http://www.google.com"
    ),
    "taobao" => array
    (
        "Taobao",
        "http://www.taobao.com"
    )
);
print("<pre>"); // Format the array output
print_r($sites);
print("</pre>");
?>

echo $sites['tutorialpro'][0] . ' address is: ' . $sites['tutorialpro'][1];

array (
    array (
        array (elements...),
        array (elements...),
        ...
    ),
    array (
        array (elements...),
        array (elements...),
        ...
    ),
    ...
)

<?php
// Create a three-dimensional array
$myarray = array(
    array(
        array(1, 2),
        array(3, 4),
    ),
    array(
        array(5, 6),
        array(7, 8),
    ),
);

// Output array information
print_r($myarray);
?>

Array
(
    [0] => Array
        (
            [0] => Array
                (
                    [0] => 1
                    [1] => 2
                )

            [1] => Array
                (
                    [0] => 3
                    [1] => 4
                )

        )

    [1] => Array
        (
            [0] => Array
                (
                    [0] => 5
                    [1] => 6
                )

            [1] => Array
                (
                    [0] => 7
                    [1] => 8
                )

        )

)