WordPress给出错误消息“出了点问题。 使用REMOTE_ADDR变量时，可能尚未保存您的更改。（..）”

Question

I'd like to set up the following - accessing a page from a specific IP will show a specific < div > that'd be hidden for anyone else accessing the page from a different IP.

Wordpress 5.2.2; I've tried a couple of ways to execute the following idea, but the general idea I had was to compare the REMOTE_ADDR with my handpicked address using an if statement, and then echo'ing the style to display the block I wanted (provided the address was the same). I also tried escaping PHP and executing the necessary CSS like that, but I had the same problem. I'm not an experienced programmer by any means, so I can only assume I'm making a mistake somewhere.

if ($_SERVER['REMOTE_ADDR'] == 'xx.xxx.xx.xxx' ) { echo '<style>.elementor-element-6788e0e{display:block!important;}</style>'; }

It's not necessarily the code that's not working - it actually serves its purpose, and the block is shown only when accessed through that IP. However, as soon as I put anything in between the if statement brackets, Wordpress barely functions.

"Something went wrong. Your change may not have been saved. Please try again. There is also a chance that you may need to manually fix and upload the file over FTP." - When saving PHP.

"Looks like something's gone wrong. Wait a couple seconds, and then try again." - When saving CSS.

Adding menu items doesn't work, etc.

I'm hoping someone can educate me on the cause of these errors, or show me a more correct way of tackling the CSS problem.

Thanks in advance!

Answer 1

Insert this function to functions.php to remove this div in every post, of couse, you can modify this function as you want:

add_filter( 'the_content', function( $content ) {
  return preg_replace('#<div class="elementor-element-6788e0e">(.*?)</div>#', '', $content);
}, 0);

Or using this in post.php file with only:

return preg_replace('#<div class="elementor-element-6788e0e">(.*?)</div>#', '', $content);