php man page for floor

FLOOR(3)								 1								  FLOOR(3)

floor - Round fractions down

SYNOPSIS
       float floor (float  $value)

DESCRIPTION
	Returns the next lowest integer value by rounding down $value if necessary.

PARAMETERS
	      o $value
		- The numeric value to round

RETURN VALUES
       $value  rounded to the next lowest integer. The return value of floor(3) is still of type float because the value range of float is usually
       bigger than that of integer.

EXAMPLES
       Example #1

	      floor(3) example

	      <?php
	      echo floor(4.3);	 // 4
	      echo floor(9.999); // 9
	      echo floor(-3.14); // -4
	      ?>

SEE ALSO
       ceil(3), round(3).

PHP Documentation Group 														  FLOOR(3)