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get

Note

This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information.

Returns the value at the specified key in the current Vector

public function get(
  int $key,
): ?Tv;

If the key is not present, null is returned. If you would rather have an exception thrown when a key is not present, use at() instead.

Parameters​

  • int $key

Returns​

  • ?Tv - The value at the specified key; or null if the key does not exist.

Examples​

This example shows how get can be used to access an index that may not exist:

$v = Vector {'red', 'green', 'blue', 'yellow'};

// Index 0 is the element 'red'
\var_dump($v->get(0));

// Index 10 doesn't exist
\var_dump($v->get(10));