Question

How to round a number down to the nearest 10 in PHP

Answer 1

function roundDownToNearest10($num) {
    return floor($num / 10) * 10;
}
  
echo roundDownToNearest10(33) . "\n";
echo roundDownToNearest10(59) . "\n";
echo roundDownToNearest10(599.99) . "\n";
echo roundDownToNearest10(3.14) . "\n";
echo roundDownToNearest10(2) . "\n";
echo roundDownToNearest10(19) . "\n";
echo roundDownToNearest10(-12) . "\n";
echo roundDownToNearest10(-101) . "\n";
echo roundDownToNearest10(-109) . "\n";
 
 
  
  
  
/*
run:
  
30
50
590
0
0
10
-20
-110
-110
  
*/

 

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