PHP floor() Function – Truncating Float to Integer

The PHP floor() function returns the greatest integer value less than or equal to a given float, effectively discarding the fractional part.

Signature: float floor(float $value) Parameter: $value – the number to be truncated.

Return value: A float representing the nearest integer not greater than $value; the type remains float because its range exceeds that of an integer.

Example:

<?php
echo floor(4.3);
echo floor(9.999);
echo floor(-3.14);
?>

Output:

// -4
// 9
// -4