تابع ‎unlink()‎‎ در PHP

<?php
$file = fopen("test.txt","w");
echo fwrite($file,"Hello World. Testing!");
fclose($file);

unlink("test.txt");
?>
<?php
$file = fopen("test.txt","w");
echo fwrite($file,"Hello World. Testing!");
fclose($file);

unlink("test.txt");
?>اجرای کد