How to delete all numbers after point in PHP

Question

example: 1.123 =>1 1.999 => 1

thanks.

Answer 1

floor() 

will round a number down to the nearest integer.

EDIT: As pointed out by Mark below, this will only work for positive values, which is an important assumption. For negative values, you'd want to use ceil() -- but checking the sign of the input value would be cumbersome and you'd probably want to employ Mark's or TechnoP's (int) cast idea instead. Hope that helps.

Answer 2

$y = 1.235251;
$x = (int)$y;
echo $x; //will echo "1"

Edit: Using the explicit cast to (int) is the most efficient way to to this AFAIK. Also casting to (int) will cut off the digits after the "." if the number is negative instead of rounding to the next lower negative number:

echo (int)(-3.75); //echoes "-3";
echo floor(-3.75); //echoes "-4";

Answer 3

$y = 1.234;
list($y) = explode(".", "$y");

:-)

Answer 4

If your input can only be positive floats then as already mentioned floor works.

floor(1.2)

However if your integer could also be negative then floor may not give you what you want: it always rounds down even for negative numbers. Instead you can cast to int as another post mentioned. This will give you the correct result for both negative and positive numbers.

(int)-1.2