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| <html> | ||
| <head> | ||
| <title>PHPMailer FAQ</title> | ||
| <style> | ||
| body, p { | ||
| font-family: Arial, Helvetica, sans-serif; | ||
| font-size: 12px; | ||
| } | ||
| div.width { | ||
| width: 500px; | ||
| text-align: left; | ||
| } | ||
| </style> | ||
| </head> | ||
| <body bgcolor="#FFFFFF"> | ||
| <center> | ||
| <div class="width"> | ||
| <body> | ||
| <h2>PHPMailer FAQ</h2> | ||
| <ul> | ||
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| <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> | ||
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| <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> | ||
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| <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> | ||
|
|
||
| <li><strong>Q: I am concerned that using include files will take up too much | ||
| processing time on my computer. How can I make it run faster?</strong><br> | ||
| <strong>A:</strong> PHP by itself is fairly fast, but it recompiles scripts every time they are run, which takes up valuable | ||
| computer resources. You can bypass this by using an opcode cache which compiles | ||
| PHP code and store it in memory to reduce overhead immensely. <a href="http://www.php.net/apc/">APC | ||
| (Alternative PHP Cache)</a> is a free opcode cache extension in the PECL library.</li> | ||
| <li><strong>Q: Which mailer gives me the best performance?</strong><br> | ||
| <strong>A:</strong> On a single machine the <strong>sendmail (or Qmail)</strong> is fastest overall. | ||
| Next fastest is mail() to give you the best performance. Both do not have the overhead of SMTP. | ||
| If you do not have a local mail server (as is typical on Windows), SMTP is your only option.</li> | ||
| <li><strong>Q: When I try to attach a file with on my server I get a | ||
| "Could not find {file} on filesystem error". Why is this?</strong><br> | ||
| <strong>A:</strong> 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 is probably 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 ("/").</li> | ||
| </ul> | ||
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||
| </div> | ||
| </center> | ||
|
|
||
| </body> | ||
| </html> |