Get the availble number count after the dot in a float number!

GetFloatCountAfterDot.php

<?php

/**
 * 获取浮点数后的有效小数位数
 */
function getFloatLenAfterDot($numbric)
{
    echo "Orinial: " . $numbric . "\n";

    $arr = explode(".", $numbric);

    print_r($arr);

    if ($arr && count($arr) == 2) {
        if (strpos($arr[1], "0E") === false) {
            return strlen($arr[1]);
        } else {
            return explode("-", $arr[1])[1];
        }
    }

    return false;
}

echo getFloatLenAfterDot(0.022202) . "\n";