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Warning: mysqli_query() expects parameter 1 to be mysqli, bool given in C:\Apache\htdocs\contents-toiawase.php on line 20

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Fatal error: Uncaught Error: Call to undefined function mysql_query() in C:\Apache\htdocs\contents-toiawase.php:42 Stack trace: #0 {main} thrown in C:\Apache\htdocs\contents-toiawase.php on line 42