Title: PHP 7.4 undefined error
Last modified: February 24, 2023

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# PHP 7.4 undefined error

 *  [xu wu](https://wordpress.org/support/users/wuxu/)
 * (@wuxu)
 * [3 years, 3 months ago](https://wordpress.org/support/topic/php-7-4-undefined-error/)
 * Warning: Use of undefined constant O – assumed ‘O’ (this will throw an Error 
   in a future version of PHP) in /www/wwwroot/www……….com/wp-content/plugins/next-
   watermark/includes/nwm-functions.php on line 43
 * Change O to ‘O’ and refresh the page, normal. Please modify the plugin, thanks!
    -  This topic was modified 3 years, 3 months ago by [xu wu](https://wordpress.org/support/users/wuxu/).

Viewing 1 replies (of 1 total)

 *  Plugin Author [nxtweb](https://wordpress.org/support/users/nxtweb/)
 * (@nxtweb)
 * [3 years, 1 month ago](https://wordpress.org/support/topic/php-7-4-undefined-error/#post-16656640)
 * Thank you Wuxu for your information. This has been corrected.
   You are welcome!

Viewing 1 replies (of 1 total)

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 * 1 reply
 * 2 participants
 * Last reply from: [nxtweb](https://wordpress.org/support/users/nxtweb/)
 * Last activity: [3 years, 1 month ago](https://wordpress.org/support/topic/php-7-4-undefined-error/#post-16656640)