１．PHP 8.0へバージョンアップで以下のerrorがでる

[23-Jun-2022 20:01:58 UTC] PHP Fatal error:  Array and string offset access syntax with curly braces is no longer supported in /var/www/html/pdf/lib/tcpdf/tcpdf.php on line 16893
[23-Jun-2022 20:23:44 UTC] PHP Warning:  "continue" targeting switch is equivalent to "break". Did you mean to use "continue 2"? in /var/www/html/pdf/lib/tcpdf/tcpdf.php on line 17780
[23-Jun-2022 20:23:44 UTC] PHP Fatal error:  Array and string offset access syntax with curly braces is no longer supported in /var/www/html/pdf/lib/tcpdf/include/tcpdf_images.php on line 318

２．version

# rpm -qa|grep php
php-common-8.0.20-1.el9.remi.x86_64
php-8.0.20-1.el9.remi.x86_64

３．互換性のない変更に伴う改修
｛｝　-> [] に変更

４．appicationで、罫線表示が崩れる
・罫線表示の修正