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- <title>PHPMailer FAQ</title>
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- <h2>PHPMailer FAQ</h2>
- <ul>
- <li><b style="background-color: #FFFF00">Q:</b> <b>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?</b><br />
- <b style="background-color: #FFFF00">A:</b> 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:
- <a href="timeoutfix.diff">timeoutfix.diff</a>. Otherwise you can wait for the new PHP release.<br /><br /></li>
- <li><b style="background-color: #FFFF00">Q:</b> <b>I am concerned that using include files will take up too much
- processing time on my computer. How can I make it run faster?</b><br />
- <b style="background-color: #FFFF00">A:</b> 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: <a href="http://apc.communityconnect.com">APC
- (Alternative PHP Cache)</a> and <a href="http://bwcache.bware.it/index.htm">Afterburner</a>
- (<a href="http://www.mm4.de/php4win/mod_php4_win32/">Win32 download</a>)
- are excellent free tools that do just this. If you have the money
- you might also try <a href="http://www.zend.com">Zend Cache</a>, 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.<br /><br /></li>
- <li><b style="background-color: #FFFF00">Q:</b> <b>What mailer gives me the best performance?</b><br />
- <b style="background-color: #FFFF00">A:</b> On a single machine the <b>sendmail (or Qmail)</b> is fastest overall.
- Next fastest is mail() to give you the best performance. Both do not have the 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.<br />
- If you are running a mailing list with thousands of names, the fastest mailers in order are: SMTP, sendmail (or Qmail), mail().<br /><br /></li>
- <li><b style="background-color: #FFFF00">Q:</b> <b>When I try to attach a file with on my server I get a
- "Could not find {file} on filesystem error". Why is this?</b><br />
- <b style="background-color: #FFFF00">A:</b> 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 ("/").<br /><br /></li>
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