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Unable to load dynamic library '/opt/alt/php56/usr/lib64/php/modules/memcached

The error message you provided indicates an issue with loading the memcached PHP extension for PHP 5.6. This could be due to various reasons, including incorrect configuration, missing dependencies, or a corrupted extension file.

Here are steps you can take to troubleshoot and resolve this issue:

  1. Verify Memcached Extension:

    • Make sure that the memcached extension is installed on your server. You can do this by running:

      bash

 

    • php -m | grep memcached

    • If it's not installed, you'll need to install it using the package manager.

  • Check Extension File:

    • Verify that the memcached.so file exists in the specified directory:

      bash
    • /opt/alt/php56/usr/lib64/php/modules/memcached.so

    • If the file is missing, you'll need to reinstall the memcached extension.

  • Verify Configuration:

    • Ensure that the extension is correctly configured in your php.ini file. Open the php.ini file and check if the following line is present:

      makefile

 

    • extension=memcached.so

  2. Check File Permissions:

    • Confirm that the memcached.so file and its parent directories have the correct permissions and are accessible by the web server user.

  3. Restart Web Server:

    • After making any changes to the configuration or files, restart your web server for the changes to take effect.

  4. Check for Dependencies:

    • Ensure that all necessary dependencies for the memcached extension is installed on your system.

    • On CloudLinux, you can use the yum package manager to install any missing dependencies.

  5. Verify PHP Version:

    • Confirm that you're using PHP 5.6 when trying to load the memcached extension. If you're using multiple PHP versions, ensure you're editing the correct php.ini file.

  6. Recompile or Reinstall Extension:

    • If all else fails, consider recompiling or reinstalling the memcached extension for PHP 5.6.

  7. Check Logs:

    • Review your web server's error logs to see if there are any specific error messages related to the memcached extension.

  8. Contact Support:

    • If you're still unable to resolve the issue, consider reaching out to CloudLinux support or your hosting provider for further assistance.

Remember to always back up critical files and configurations before making any changes to your server.

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