(PHP 5 >= 5.1.2, PHP 7, PHP 8)
SplFileInfo::getMTime — Gets the last modified time
Returns the time when the contents of the file were changed. The time returned is a Unix timestamp.
此函数没有参数。
Returns the last modified time for the file, in a Unix timestamp on success, or false on failure.
示例 #1 SplFileInfo::getMTime() example
<?php
$info = new SplFileInfo('example.jpg');
echo 'Last modified at ' . date('g:i a', $info->getMTime());
?>以上示例的输出类似于：
Last modified at 1:49 pm