floor
(PHP 4, PHP 5)
floor — Round fractions down
Description
    float floor
     ( float $value
    )
  Returns the next lowest integer value by rounding down value if necessary.
Parameters
- value
- 
      The numeric value to round 
Return Values
value rounded to the next lowest integer. The return value of floor() is still of type float because the value range of float is usually bigger than that of integer.
Examples
Example #1 floor() example
<?php
echo floor(4.3);   // 4
echo floor(9.999); // 9
echo floor(-3.14); // -4
?>