Set the date and time for a file
I want to add date and time on an image file that I have uploaded. Which way is the best to accomplish this?
Thanks in advance!
You can use the
touch function to set the last modified date:
To retrieve this in PHP, use
How To Change Created or Modified Timestamps for Files and Folders, attributes which can be found on the lower half of the window. You can change the file’s date and time as well as any file attributes by pressing F6 to bring up the options window. You can edit the details down to the second and you can adjust the file times by adding or subtracting time. You can also edit any file attributes which can be found on the lower half of the window.
Any modern operating system records timestamp information when a file is created (and possibly, when modified or accessed).
You can get this information from php using the stat() call. This returns an associative array with several pieces of data. You'd want the 'atime', 'mtime' or 'ctime' elements.
Read here for the official doc with copious examples:
If you have a pointer to the file (if you're currently using it and it's open for example) you can use fstat instead:
How to Change File Dates: 11 Steps (with Pictures), How do I change the date of a file in Windows 10? How to get date and time in a batch file. Below is a sample batch script which gets current date and time. Datetime.cmd. @echo off for /F "tokens=2" %%i in ('date /t') do set mydate=%%i set mytime=%time% echo Current time is %mydate%:%mytime%. When we run the above batch file.
Many modern cameras add date and time to EXIF tags in image files. So many photos already have this data. There are PHP functions to read this data: https://www.php.net/manual/en/ref.exif.php
You can also find some libraries to write this data to image. Here is a discussion on that: writing exif data in php I think it is the best and standard way to store date and time of image inside image file. I think most of desktop applications for photo viewing also support exif.
When no exif data is available then OS file creation time can be used. But this could be the time of last file copy.
How to Change the Created Date on a PDF File, How do I change the Created date on a PDF? When an application is deployed some developers set the date and time of all the files to the same date and time. FileTime is a simple utility that allows you to do this. FileTime sets a file's or group of files' creation date/time, last access date/time and last write date/time.
Set the date and time for a file, 3 Answers. You can use the touch function to set the last modified date: touch("path/to/my-image-file. jpg", $someTimestamp); The date and time in DOS Scripting have the following two basic commands for retrieving the date and time of the system. DATE. This command gets the system date. Syntax DATE Example @echo off echo %DATE% Output. The current date will be displayed in the command prompt. For example, Mon 12/28/2015 TIME. This command sets or displays the time. Syntax TIME Example @echo off echo %TIME% Output. The current system time will be displayed. For example, 22:06:52.87
File.SetCreationTime(String, DateTime) Method (System.IO , Sets the date and time the file was created. A DateTime containing the value to set for the creation date and time of path . This value is expressed in local time. File Times and Daylight Saving Time. You must take care when using file times if the user has set the system to automatically adjust for daylight saving time. To convert a file time to local time, use the FileTimeToLocalFileTime function. However, FileTimeToLocalFileTime uses the current settings for the time zone and daylight saving time. Therefore, if it is daylight saving time, it takes daylight saving time into account, even if the file time you are converting is in standard time.
How to Change the Last Modified Date, Creation Date, and Last , To change other file attributes like your last modified date, creation date, You can also use File Explorer to change or set other file attributes, file creation data, press to enable the Modify date and time stamps checkbox. Sets the date and time that the specified file was last written to. public: static void SetLastWriteTime (System::String ^ path, DateTime lastWriteTime); C#. public static void SetLastWriteTime (string path, DateTime lastWriteTime); static member SetLastWriteTime : string * DateTime -> unit.