Check if the text file was empty

Question

I'd like to know how to check if a text file is empty or not. It means that there is no text even some space, i.e. it was blank

function keyRemain($path)
{
    $ambil = file_get_contents("data/$path/keywords.txt");
    $kw = explode(",", $ambil);
    if (count($kw) > 1) {
        return false;
    } else {
        return true;
    }
}

pravindot17 · Answer 1 · 2017-12-08T11:33:22.887

4

You have to check the empty function along with trim

function keyRemain($path)
{
    $ambil = trim(file_get_contents("data/$path/keywords.txt"));
    var_dump($ambil); // check the output here
    if(!empty($ambil)) {
        return false;
    } else {
        return true;
    }
}

edited Dec 08 '17 at 11:33

answered Dec 08 '17 at 11:22

pravindot17

1,199
1
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32

using filesize is a mistake. White spaces will count size. – SaidbakR Dec 08 '17 at 11:28
@rafi the second option will have to work, have you tried var_dump on `$ambil` variable just before if condition? – pravindot17 Dec 08 '17 at 11:32
@RafiHalilintar `trim` should work if the file just contains white spaces only, i.e there is no new line for example. – SaidbakR Dec 08 '17 at 11:34
@pravindot17 i have try to dump it, it still blank there is no value even not showing the var type. – Rafi Halilintar Dec 08 '17 at 11:39
1

@SaidbakR so it can't read the empty file ? i think it has another way.. let me figure it out.. Thanks btw for share your knowledge – Rafi Halilintar Dec 08 '17 at 11:40

score 1 · Answer 2 · answered Dec 08 '17 at 12:34

1

Maybe this was not the answer, just the another way to check the file. Before this was happend, the code appear instead the class. After i cut it and move it outside of the class it work perfectly without any errors.

answered Dec 08 '17 at 12:34

Rafi Halilintar

79
1
10

score -1 · Answer 3 · answered Dec 08 '17 at 11:23

-1

file_get_contents() will read the whole file while filesize() uses stat() to detirmine the file size. Use filesize(), it should consume less disk I/O.

That's the answer found here, on stack...

You can also (on same link there's this answer):

clearstatcache();
if(filesize($path_to_your_file)) {
    // your file is not empty
}

answered Dec 08 '17 at 11:23

Marcelo Agimóvel

1,668
2
20
25

File size is not an option for this requirement. some spaces will make size greater than zero. – SaidbakR Dec 08 '17 at 11:26

Check if the text file was empty

3 Answers3