如何将h:m:s转换为float，并将float转换为h:m:s php

function hmsToFloat($hms) {
    list($hours, $minutes, $seconds) = explode(':', $hms);
    return $hours + ($minutes / 60) + ($seconds / 3600);
}

// 示例使用
$timeString = "02:30:45";
$floatTime = hmsToFloat($timeString);
echo $floatTime; // 输出: 2.5125

function floatToHms($float) {
    $hours = floor($float);
    $minutes = floor(($float - $hours) * 60);
    $seconds = round((((($float - $hours) * 60) - $minutes) * 60));
    return sprintf('%02d:%02d:%02d', $hours, $minutes, $seconds);
}

// 示例使用
$floatTime = 2.5125;
$timeString = floatToHms($floatTime);
echo $timeString; // 输出: 02:30:45