Online PHP editor | refs for M23TT

@ 2015-03-30T10:45:46Z

<?php
function roundDown($var){
    $len = strlen($var)-1;
    $divide = 1;
    for($i=1;$i<=$len;$i++){
        $divide .= 0;
    }
    
    
    return floor($var/$divide)*$divide;
}

echo roundDown(23);