PHP Warning: PHP Startup: Unable to load dynamic

Sometimes people here are not as they could be...

For whatever reason, your php.ini is mis-configured.

One thing to note that all those missing files are actually Windows files (.dll) on Linux these would likely be .so files. I'm assuming your hosting on a Linux server.

First find your php.ini file. If you have command line access via SSH, you can try running:

php --ini
if not you make a simple script, call it test.php like so:

<?php
phpinfo();
?>
Upload the file and run it, something like:

http://www.yoursite.com/test.php

Among the information provided will be the path to php.ini

Once you find it, one option is to edit it and comment out all those extensions, by putting a ";" in front of the line.

Another option is to check if the *.so files exist. Look for them under /usr/lib/php. If they exist, edit your php.ini file to have all those extension end in .so instead of .dll

Finally, if they don't exist, you could install them by using apt-get or yum. An example:

sudo apt-get install php-mbstring

so擴展文件找不到，說明路徑不對，確認(rèn)下具體路徑在什么地方。如果不知道可以看看其擴展文件在哪。改為相同的再試試。