PHP fopen() / fwrite() help

[Christian Cepe]

How to remove multiple lines in txt file using fwrite/fopen method? This is my .txt file

One
Two
Three
One
Four
Five
Three
Eight

I want to remove those repeated lines (One & Three)

Help me, thanks!

[Rksk]

I think, you can't do it directly with only fopen & fwrite.
You have to get whole file into an array, clean repeated items and overwrite whole with new data.

[CreativityKills]

I don't really understand what you want to achieve but...

$chop_lines = array(4, 7);

$file = "path/to/file.txt";

$data = file_get_contents($file);

$data_array = explode("\n", $data);

foreach ($chop_lines as $line)
{
    $line = (int) $line - 1;

    if(isset($data_array[$line])) unset($data_array[$line]);
}

$data = implode("\n", $data_array);

file_put_contents($file);

If on the other hand u wanna keep only unique entries, u could probably do something like...

$file = "path/to/file.txt";

$data = file_get_contents($file);

$data_array = explode("\n", $data);

$data_array = array_unique($data_array);

$data = implode("\n", $data_array);

file_put_contents($file);

[Rksk]

I suggested this

$file = "path/to/file.txt";

$data = file_get_contents($file);

$data_array = explode("\n", $data);

$data_array = array_unique($data_array);

$data = implode("\n", $data_array);

file_put_contents($file);