Skip to main content

floor

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 largest integer value less than or equal to $value

namespace HH\Lib\Math;

function floor(
  num $value,
): float;
  • To find the smallest integer value greater than or equal to $value, see Math\ceil().
  • To find the largest integer value less than or equal to a ratio, see Math\int_div().

Parameters​

  • num $value

Returns​

  • float

Examples​

$floor1 = Math\floor(4.7);
echo "Floor of 4.7 is $floor1 \n";

$floor2 = Math\floor(5);
echo "Floor or 5 is $floor2 \n";