Are there tuples in PHP?

Arrays in PHP can be used very much like a tuple:

// one dimensional mixed data
$x = [1, 2, "hello"];

// multidimensional third element
$y = [1, 2, [3, 4, 5]];

// assigning to variables (list unpacking)
list($a, $b, $c) = $x; //$a is 1, $b is 2, $c is "hello"

As of PHP 7.1 you can also unpack like this:

[$a, $b, $c] = $x;