php file problem

i keep getting these errors..

Warning: file_get_contents(test): failed to open stream: No such file or directory in /home/prawgzn/public_html/m/remove.php on line 5

Warning: fopen(test): failed to open stream: Permission denied in /home/prawgzn/public_html/m/remove.php on line 9

Warning: fputs(): supplied argument is not a valid stream resource in /home/prawgzn/public_html/m/remove.php on line 10

Warning: fclose(): supplied argument is not a valid stream resource in /home/prawgzn/public_html/m/remove.php on line 11

with the code..

PHP Code:

---

<?php  
$filename = 'test.txt';  
$somecontent = $_GET['data'] . "\n";  

$file_data = file_get_contents($filename);  

$file_data = str_replace($somecontent, "", $file_data);  

$file = fopen($filename, "w"); 
fputs($file, $file_data);  
fclose($file); 

?>

---

You need to make sure that you've chmodded the script, as it needs permission to be able to write to a file.

Secondly, the first line says that it can't find the file, and judging by,
$filename = 'test.txt';
might be why. Try a ./ at the beginning or something like that. Assuming its in the same folder of course.