php filemtime -取得文件修改时间
php filemtime -取得文件修改时间
filemtime
( PHP 4中, PHP 5中)
filemtime -取得文件修改时间
描述
国际filemtime (字符串$文件名)
这个函数返回时,数据块的文件被写入,这就是当时的内容文件改变。
参数
文件名
文件路径。
返回值
返回时间的文件的最后修改,或FALSE的情况下发生错误。返回的时间是作为一个Unix的时间戳,这是合适的日期( )函数。
实例
例如# 1 filemtime ( )的例子
// outputs e.g. somefile.txt was last modified: December 29 2002 22:16:23.
$filename = 'somefile.txt';
if (file_exists($filename)) {
echo "$filename was last modified: " . date ("F d Y H:i:s.", filemtime($filename));
}
?>

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