php wget: Return an empty file

Greetings PHP(eople), I have a wget process that runs to download a file from a web site, however, if no file exists at the location I`m pulsing, how do I get it to abort ? Here is the code : <?php $getfile = 'wget -dv -o log.txt http://www.somesite.co.za/somefile.php'; $get = shell_exec($getfile); ?> I looked at filesize(), but if no file is brought back then there is nothing for the function to check. If someone could point me to the right PHP function, or a link somewhere... Regards -- Chris Blake Cell: 082 775 1492 Work: +27 11 782 0840 Fax : +27 11 782 0841 Mail: chris@pixcel.co.za I have a very good DENTAL PLAN. Thank you.