PHP 用科学记数法格式化数字

Posted 2021-05-14

<?php
    /*
    Copyright (c) 2008, reusablecode.blogspot.com; some rights reserved.
    
    This work is licensed under the Creative Commons Attribution License. To view
    a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ or
    send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California
    94305, USA.
    */

    // Express a number in scientific notation.
    function formatScientific($someFloat)
    {
        $power = ($someFloat % 10) - 1;
        return ($someFloat / pow(10, $power)) . "e" . $power;
    }
?>