PHP Startup Errors: Unable to Load Dynamic Libraries (php_gd2.dll, php_mysql.dll, etc.)

This is an error message indicating a problem loading PHP extension libraries. It shows that the dynamic library files 'php_gd2.dll', 'php_mysql.dll', 'php_mysqli.dll', 'php_pdo.dll', and 'php_pdo_mysql.dll' are unable to load. This likely means these library files are missing from the specified directory.

To resolve this, try the following steps:

1. Check if the specified directory ('/usr/lib/php/20151012/') contains these dynamic library files. If not, you may need to reinstall or update the corresponding PHP extensions.

2. If these library files exist elsewhere, try copying them to the specified directory.

3. Verify that the extension library paths in the 'php.ini' file are correct. You can find the 'php.ini' file location by running the command 'php -i' in your terminal and then look for the 'extension_dir' setting.

4. Ensure your PHP version is compatible with these extension library files. If not, you may need to upgrade or downgrade your PHP version.

Note that these steps may vary depending on your operating system and PHP configuration. If you're unsure how to proceed, seek help from a professional.