Alternately, you can click on the 'Text Documents' drop-down menu in the save dialog box and change the setting to "All Files ".
A Note on Windows Notepad: If you are writing your PHP scripts using Windows Notepad, you will need to ensure that your files are saved with the .php extension. (Notepad adds a .txt extension to files automatically unless you take one of the following steps to prevent it.) When you save the file and are prompted to provide a name for the file, place the filename in quotes (i.e. "hello.php "). Alternately, you can click on the 'Text Documents' drop-down menu in the save dialog box and change the setting to "All Files". You can then enter your filename without quotes.