Deprecated: urlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /home/transpw/www/index.php(2) : eval()'d code(1) : eval()'d code(1) : eval()'d code on line 2
Deprecated: hash(): Passing null to parameter #2 ($data) of type string is deprecated in /home/transpw/www/index.php(2) : eval()'d code(1) : eval()'d code(1) : eval()'d code on line 2 Nullページになります。 C#入門】nullとnull許容型の基礎とベストプラクティス