patterns.php

// Literal pattern
$foo is 1;
$foo is 'foo';
$foo is SOME_CONST; // Ambiguous with class names :(

// Binding pattern
$foo is $bar;

// Type pattern
$foo is Foo;
$foo is int|string;

// Range pattern
$foo is 0..=10;
$foo is 0..<10;
$foo is >10;
$foo is >=10;

// Array pattern
$foo is [1, 2];
$foo is ['foo' => 0..=10];
$foo is ['foo', ...];

// Object pattern
$foo is Foo { bar: $bar };
$foo is Foo { $bar };

// Logical pattern
$foo is Equatable and Hashable;
$foo is 1 or 2;

// Wildcard pattern
$foo is _

// Regex pattern?
$foo is /^foo/;

// Expression pattern?
$foo is Foo { bar: (literallyAnything()) }
// Alternative to guards in other languages
match (foo) {
	Foo { y } where y == literallyAnything() => ...,
}