如何从用户上次通过.txt上传php时保存我的$ date

Question

I want it so that when my users upload a document I can present on the page the time the document was uploaded and therefore if they were to refresh the page the time the document was uploaded would still be there. I have a document to store the time with which is updateLog.txt and is empty at the moment. This is what I've currently got:

date_default_timezone_set('United Kingdome/Londone');
$date = date('d/m/Y h:i:s a', time());

$myFile=fopen("uploadLog.txt","w") or exit("Can’t open file!");
fwrite($myFile, $_POST[$date]."\r\n");
fclose($myFile);

But nothing is saving to the document?

Answer 1

You used $_POST[$date] instead of $date and a wrong time zone name. The corresponding time zone would be Europe/London . You can find a full list of time zones here: http://php.net/manual/en/timezones.php

Your code should look like this:

date_default_timezone_set('Europe/London');
$date = date('d/m/Y h:i:s a', time());

$myFile = fopen("uploadLog.txt","w") or exit("Can’t open file!");
fwrite($myFile, $date."\r\n");
fclose($myFile);

If you want to append to the file, use a as mode insted of w for fopen :

$myFile = fopen("uploadLog.txt","a") or exit("Can’t open file!");

Answer 2

File opening mode a+ , Open a file for read/write .

The existing data in file is preserved. File pointer starts at the end of the file. Creates a new file if the file doesn't exist.

a is use to write something to the file, w also do the same thing, but the difference is if we open a file as a mode then the data are stores like stack, if we open a file as w mode then it will Erases the contents of the file or creates a new file if it doesn't exist. File pointer starts at the beginning of the file.

date_default_timezone_set('Europe/London');
$date = date('d/m/Y h:i:s a', time());

$myFile=fopen("uploadLog.txt","a+") or exit("Can’t open file!");
fwrite($myFile, $date."\r\n");


//If you want to read the file, then Output one line until end-of-file
while(!feof($myFile)) {
  echo fgets($myFile) . "<br>"; //data pull to the php
}
fclose($myFile);