+I'm using the SMTP mailer and I keep on getting a timeout message
+well before the X seconds I set it for. What gives?
+
+PHP versions 4.0.4pl1 and earlier have a bug in which sockets timeout
+early. You can fix this by re-compiling PHP 4.0.4pl1 with this fix:
+timeoutfix.diff. Otherwise you can wait
+for the new PHP release.
+
+I am concerned that using include files will take up too much
+processing time on my computer. How can I make it run faster?
+
+PHP by itself is very fast. Much faster than ASP or JSP running on
+the same type of server. This is because it has very little overhead compared
+to its competitors and it pre-compiles all of
+its code before it runs each script (in PHP4). However, all of
+this compiling and re-compiling can take up a lot of valuable
+computer resources. However, there are programs out there that compile
+PHP code and store it in memory (or on mmaped files) to reduce the
+processing immensely. Two of these: APC
+(Alternative PHP Cache) and Afterburner
+(Win32 download)
+are excellent free tools that do just this. If you have the money
+you might also try Zend Cache, it is
+even faster than the open source varieties. All of these tools make your
+scripts run faster while also reducing the load on your server. I have tried
+them myself and they are quite stable too.
+
+What mailer gives me the best performance?
+
+On a single machine the mail() or sendmail mailers give you the best
+performance because they do not have the added overhead of SMTP.
+If you have you have your mail server on a another machine then
+SMTP is your only option, but you do get the benefit of redundant
+mail servers.
+
+When I try to attach a file with on my server I get a
+"Could not find {file} on filesystem error". Why is this?
+
+If you are using a Unix machine this is probably because the user
+running your web server does not have read access to the directory
+in question. If you are using Windows, then the problem probably is
+that you have used single backslashes to denote directories ("\").
+A single backslash has a special meaning to PHP so these are not
+valid. Instead use double backslashes ("\\") or a single forward
+slash ("/").
+