php獲取當前時間戳是幾位

<?php
//unix時間戳
$time = time();
//轉成時間格式
$dadte = date('Y-m-d H:i:s',$time);
echo $time;
echo "<br>";
echo $dadte;
?>

1572399129
2019-10-30 01:32:09

<?php
function getUnixTimestamp ()
{
 list($s1, $s2) = explode(' ', microtime());
 return (float)sprintf('%.0f',(floatval($s1) + floatval($s2)) * 1000);
}
echo time();
echo "<br>";
echo getUnixTimestamp();

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