Multidimensional Arrays

Arrays containing other arrays. Useful for tabular data, JSON, and database results.

Example

<?php
// 2D array (like a table)
$students = [
    ["Alice", 25, "A"],
    ["Bob",   22, "B"],
    ["Carol", 28, "A+"],
];
echo $students[0][0]; // Alice
echo $students[1][2]; // B

// Associative multidimensional
$config = [
    "db" => [
        "host" => "localhost",
        "port" => 3306,
        "name" => "mydb",
    ],
    "cache" => [
        "driver" => "redis",
        "ttl"    => 3600,
    ],
];
echo $config["db"]["host"]; // localhost
?>

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