如果 php 中的值是十进制值，如何获取舍入值？

Question

$str = 6.87;    
$x = ceil($str/5) * 5;
echo $x;

I have a variable str and I want to covert str round value. In above I have 6.87 and I want 6.9 and if I have 6.43 then it should be 6.4 similarly if $str = 6.45 then it become 6.5 . So, How can I do this? Please help me.

Thank You

Answer 1

Use:

$str = 6.87;    
echo round($str,1);

where the first parameter is the variable, then the second is the decimal point to round.

this will output

6.9

Answer 2

You should use round() with 2nd parameter 1 like following code:

echo $str = round(6.45,1);  

Output:

6.5

Answer 3

it should be more like this.. the 1 being number of position(s) to round up to.

$str = 6.87;
echo(round($str,1));

which will give you 6.9