PHP Parse error: syntax error, unexpected ''< /ul>'' (T_CONSTANT_ENCAPSED_STRING) in /modules/php/php.module(80) : eval()'d code on line 4

Encountered numerous PHP syntax errors in Drupal 7 while checking the error log file:

[01-Sep-2020 17:31:23 Asia/Manila] PHP Parse error:  syntax error, unexpected ''< /ul>'' (T_CONSTANT_ENCAPSED_STRING) in /home/website/public_html/modules/php/php.module(80) : eval()'d code on line 4
[01-Sep-2020 17:31:41 Asia/Manila] PHP Parse error:  syntax error, unexpected ''< /ul>'' (T_CONSTANT_ENCAPSED_STRING) in /home/website/public_html/modules/php/php.module(80) : eval()'d code on line 4

While this can be specific to custom coding or even server-level, fixing this website or Drupal level might help.

Three solutions on how to avoid and/or fix the error:

1. If website is running on PHP version lower than 7.x, try to switch PHP to version 7.x
   This can be done for instance under CPanel > MultiPHP manager. If missing or you do not have access, ask your webhosting provider or another technical expert to do this for you.
    
2. Turn off the PHP Filter module
   You need to double-check though that this format is not being used in any blocks or nodes
   Go to the module listing, disable or turn-off PHP Filter module
    
3. Text Format hierarchy
   If for some reason the PHP format is needed and used (although the first option is the best recommendation as enabling PHP filtering is a security risk), place the PHP format above all other formats in precedence.
   Go to Configuration > Content Authoring > Text Formats
   Then drag PHP code text format above all other formats
   Save changes