floor
(PHP 4, PHP 5)
floor — Round fractions down
說明
float floor
( float $value
)
Returns the next lowest integer value by rounding down value if necessary.
參數
- number
-
The numeric value to round
Return值
arg 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.
範例
Example#1 floor() example
<?php
echo floor(4.3); // 4
echo floor(9.999); // 9
echo floor(-3.14); // -4
?>