Warning: PHP Startup: Unable to load dynamic library - php

Question

I am currently hosting on 1und1.de. my codes work on localhost but upon uploading it on the shared hosting server i got the following errors:
Warning: Unknown: open(C:\xampp\tmp/sess_bnt91ftgq6s4obn2684fud47p5, O_RDWR) failed: No such file or directory (2) in Unknown on line 0
Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (C:\xampp\tmp) in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_bz2.dll' - C:\xampp\php\ext/php_bz2.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_curl.dll' - C:\xampp\php\ext/php_curl.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_mbstring.dll' - C:\xampp\php\ext/php_mbstring.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_exif.dll' - C:\xampp\php\ext/php_exif.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_gd2.dll' - C:\xampp\php\ext/php_gd2.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_gettext.dll' - C:\xampp\php\ext/php_gettext.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_mysql.dll' - C:\xampp\php\ext/php_mysql.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_mysqli.dll' - C:\xampp\php\ext/php_mysqli.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_openssl.dll' - C:\xampp\php\ext/php_openssl.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_pdo_mysql.dll' - C:\xampp\php\ext/php_pdo_mysql.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_pdo_sqlite.dll' - C:\xampp\php\ext/php_pdo_sqlite.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_soap.dll' - C:\xampp\php\ext/php_soap.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_sockets.dll' - C:\xampp\php\ext/php_sockets.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_sqlite3.dll' - C:\xampp\php\ext/php_sqlite3.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_xmlrpc.dll' - C:\xampp\php\ext/php_xmlrpc.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: PHP Startup: Unable to load dynamic library 'C:\xampp\php\ext/php_xsl.dll' - C:\xampp\php\ext/php_xsl.dll: cannot open shared object file: No such file or directory in Unknown on line 0
Warning: Cannot open 'C:\xampp\php\extras\browscap.ini' for reading in Unknown on line 0
What does these errors mean. does these errors have something to do with my hosting provider?

Answer 1

I had this error locally with this message:
Warning: Cannot open "\xampp\php\extras\browscap.ini" for reading in
Unknown on line 0
By changing this line of php.ini file :
browscap="\xampp\php\extras\browscap.ini"
to this:
browscap="C:\xampp\php\extras\browscap.ini"
the error has gone.

Answer 2

It looks as though you've probably copied your php.ini configuration file directly from your system to your hosting server. Don't do that. The data in your configuration file is specific to your XAMPP installation; this is not appropriate for the web server, and is causing these errors because the files referenced in your configuration do not exist on the server.

Answer 3

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