Title: 500 Internal error when using PHP version 7.3.25
Last modified: April 6, 2021

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# 500 Internal error when using PHP version 7.3.25

 *  Resolved [thetoolman123](https://wordpress.org/support/users/thetoolman123/)
 * (@thetoolman123)
 * [5 years, 3 months ago](https://wordpress.org/support/topic/500-internal-error-when-using-php-version-7-3-25/)
 * Hi there,
 * I am currently running WordPress version 5.7 with PHP version 5.6. This is all
   running fine.
 * However, I am trying to install phpbb in a sub directory and getting an error
   saying I need to use the latest version of PHP (version 7.1.3).
 * When I update my PHP version to the latest version, it causes a 500 Internal 
   error on the main WordPress website.
 * Does anyone know why this is and how to get around it? I thought the latest WP
   version would work with the latest PHP version?
 * Any advice would be great, thanks!

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Moderator [Yui](https://wordpress.org/support/users/fierevere/)
 * (@fierevere)
 * 永子
 * [5 years, 3 months ago](https://wordpress.org/support/topic/500-internal-error-when-using-php-version-7-3-25/#post-14282039)
 * WordPress by itself should run fine with all mentioned PHP versions.
    It is even
   recommended to have PHP 7.3 or 7.4 as they are the latest supported by upstream.
   PHP 8 is somewhat not yet ready and you may get errors and conflicts with plugins
   and themes.
 * Speaking of conflicts, it seems you have one, with something ancient in your 
   WP installation, very old theme or plugin, which are not PHP 7 ready.
 * Check the PHP error log, or use debugging mode to figure out which plugin/theme
   cause the error.
 * > [Debugging in WordPress](https://wordpress.org/support/article/debugging-in-wordpress/)
 * 
    Or you can disable/enable plugins one by one to find out the culprit, consider
   switching the theme as well, one of recent Twenty * themes will do.
 * And of course you can try to update all plugins and used theme first.
 *  Thread Starter [thetoolman123](https://wordpress.org/support/users/thetoolman123/)
 * (@thetoolman123)
 * [5 years, 3 months ago](https://wordpress.org/support/topic/500-internal-error-when-using-php-version-7-3-25/#post-14282103)
 * Thanks for the reply.
 * I have just tried again and it seems to e all ok, I just had to wait a few minutes
   for it to take effect!
 * Thanks for your help

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘500 Internal error when using PHP version 7.3.25’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [thetoolman123](https://wordpress.org/support/users/thetoolman123/)
 * Last activity: [5 years, 3 months ago](https://wordpress.org/support/topic/500-internal-error-when-using-php-version-7-3-25/#post-14282103)
 * Status: resolved

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