Code in append mode
$target_dir ="status.txt";
$handle = fopen($target_dir, 'a') or die('Cannot open file: '.$target_dir);
$data = '0';
fwrite($handle, $data);
Code in write mode
$target_dir ="status.txt";
$handle = fopen($target_dir, 'w') or die('Cannot open file: '.$target_dir);
$data = '0';
fwrite($handle, $data);
I gave full permission of status.txt file but write mode is not working