Math Function

1. abs => it returns the absolute value of Number...
Syntax : abs(x)
<?php
echo(abs(6.7) . "<br />"); //6.7
echo(abs(-3) . "<br />"); //3 echo(abs(3)); //3
?>
2. ord => returns highest integer value by rounding .
Syntax : ceil(x)
3. floor => The function returns the value of a number rounded DOWNWARDS to the nearestinteger.
Syntax : floor(x)
4. round => The function rounds a number to the nearest integer.
Syntax : round(x)

Ord()	Floor()	Round()
<?php echo(ceil(0.60) . "<br />"); //1 echo(ceil(0.40) . "<br />"); //1 echo(ceil(5) . "<br />"); //5 echo(ceil(5.1) . "<br />"); //6 echo(ceil(-5.1) . "<br />"); // -5 echo(ceil(-5.9)) // -5 ?>	<?php echo(floor(0.60) . "<br />"); //0 echo(floor(0.40) . "<br />"); //0 echo(floor(5) . "<br />"); //5 echo(floor(5.1) . "<br />"); //5 echo(floor(-5.1) . "<br />"); //-6 echo(floor(-5.9)); //-6 ?>	<?php echo(round(0.60) . "<br />"); //1 echo(round(0.50) . "<br />"); //1 echo(round(0.49) . "<br />"); //0 echo(round(-4.40) . "<br />"); //-4 echo(round(-4.60)) //-5 ?>