回答編集履歴
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test
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@@ -15,3 +15,21 @@
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配列は0開始。（つまり0が1番目）
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もしくは
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```php
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$sql='SELECT code,name,price,gazou FROM mst_product WHERE code=:code';
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$stmt=$dbh->prepare($sql);
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$stmt->bindValue(':code', $val, PDO::PARAM_INT);
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$stmt->execute();
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```
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[PHPマニュアル](https://www.php.net/manual/ja/book.pdo.php)参考に。
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