/
array-slice.php
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/
array-slice.php
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<?php
namespace ArraySlice;
use function PHPStan\Testing\assertType;
class Foo
{
/**
* @param non-empty-array $a
*/
public function nonEmpty(array $a): void
{
assertType('array', array_slice($a, 1));
}
/**
* @param mixed $arr
*/
public function fromMixed($arr): void
{
assertType('array', array_slice($arr, 1, 2));
}
public function normalArrays(array $arr): void
{
/** @var array<int, bool> $arr */
assertType('array<int, bool>', array_slice($arr, 1, 2));
assertType('array<int, bool>', array_slice($arr, 1, 2, true));
/** @var array<string, int> $arr */
assertType('array<string, int>', array_slice($arr, 1, 2));
assertType('array<string, int>', array_slice($arr, 1, 2, true));
}
public function constantArrays(array $arr): void
{
/** @var array{17: 'foo', b: 'bar', 19: 'baz'} $arr */
assertType('array{b: \'bar\', 0: \'baz\'}', array_slice($arr, 1, 2));
assertType('array{b: \'bar\', 19: \'baz\'}', array_slice($arr, 1, 2, true));
/** @var array{17: 'foo', 19: 'bar', 21: 'baz'}|array{foo: 17, bar: 19, baz: 21} $arr */
assertType('array{\'bar\', \'baz\'}|array{bar: 19, baz: 21}', array_slice($arr, 1, 2));
assertType('array{19: \'bar\', 21: \'baz\'}|array{bar: 19, baz: 21}', array_slice($arr, 1, 2, true));
}
public function constantArraysWithOptionalKeys(array $arr): void
{
/** @var array{a?: 0, b: 1, c: 2} $arr */
assertType('array{a?: 0, b?: 1}', array_slice($arr, 0, 1));
assertType('array{a?: 0, b: 1, c: 2}', array_slice($arr, 0));
assertType('array{a?: 0, b: 1, c: 2}', array_slice($arr, -99));
assertType('array{a?: 0, b: 1, c: 2}', array_slice($arr, 0, 99));
assertType('array{a?: 0}', array_slice($arr, 0, -2));
assertType('array{}', array_slice($arr, 0, -3));
assertType('array{}', array_slice($arr, 0, -99));
assertType('array{}', array_slice($arr, -99, -99));
assertType('array{}', array_slice($arr, 99));
/** @var array{a?: 0, b?: 1, c: 2, d: 3, e: 4} $arr */
assertType('array{c?: 2, d?: 3, e?: 4}', array_slice($arr, 2, 1));
assertType('array{b?: 1, c?: 2, d: 3, e?: 4}', array_slice($arr, 1, 3));
assertType('array{e: 4}', array_slice($arr, -1));
assertType('array{d: 3}', array_slice($arr, -2, 1));
/** @var array{a: 0, b: 1, c: 2, d?: 3, e?: 4} $arr */
assertType('array{c: 2}', array_slice($arr, 2, 1));
assertType('array{c?: 2, d?: 3, e?: 4}', array_slice($arr, -1));
assertType('array{b?: 1, c?: 2, d?: 3}', array_slice($arr, -2, 1));
assertType('array{a: 0, b: 1, c?: 2, d?: 3}', array_slice($arr, 0, -1));
assertType('array{a: 0, b?: 1, c?: 2}', array_slice($arr, 0, -2));
/** @var array{a: 0, b?: 1, c: 2, d?: 3, e: 4} $arr */
assertType('array{b?: 1, c: 2, d?: 3, e?: 4}', array_slice($arr, 1, 2));
assertType('array{a: 0, b?: 1, c?: 2}', array_slice($arr, 0, 2));
assertType('array{a: 0}', array_slice($arr, 0, 1));
assertType('array{b?: 1, c?: 2}', array_slice($arr, 1, 1));
assertType('array{c?: 2, d?: 3, e?: 4}', array_slice($arr, 2, 1));
assertType('array{a: 0, b?: 1, c: 2, d?: 3}', array_slice($arr, 0, -1));
assertType('array{c?: 2, d?: 3, e: 4}', array_slice($arr, -2));
/** @var array{a: 0, b?: 1, c: 2} $arr */
assertType('array{a: 0, b?: 1}', array_slice($arr, 0, -1));
assertType('array{a: 0}', array_slice($arr, -3, 1));
}
}