PHP fopen won't append file extension when function in name

Question

I'm trying to timestamp a file after the time its created and then add extension :

$file_name = "reports/".date('m-d-Y_g:ia').".txt";
$fp = fopen($file_name, 'w');
fwrite($fp, "Did not return any results posted in the past week");
fclose($fp);

its returns file with no extension , any idea? Thanks

Answer 1

Found out why , it didnt accept " : " in the name .

Answer 2

You did not provide an example of the filename it actually creating, but am assuming it stops at the : character. It should work if you remove the : from the filename.

See this Wikipedia page in reference to filenames.