Lowest nearest integer of a number by floor()

floor() function returns the highest integer lower than the given number or the nearest integer ( on lower side ) of the number.
<?Php
echo floor(2.7).'<br>'; // Output 2
echo floor(2.4).'<br>'; // Output 2
echo floor(2.5).'<br>'; // Output 2
echo floor(-10.8).'<br>'; // Output -11
echo floor(-10.3).'<br>'; // Output -11
echo floor(-10.5).'<br>'; // Output -11
?>
We get the just lower nearest integer from the number.

Here is a comparison between ceil(), floor() and round() function. For different input numbers we will get different values by using these functions.
ValueFloor()ceil()round()
2.7233
2.4232
2.5233
2.48232
2.62233
2222
-8.7-9-8-9
-8.5-9-8-9
-8.3-9-8-8
-8.49-9-8-8
-8.61-9-8-9
-8-8-8-8
Note that there is no point is using ceil() or floor() functions on integers directly. ( we will get the same value )
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