MYSQLI::prepare() ，使用占位符时出错:something

我使用 mysqli，我看到了一些使用占位符的示例，例如 :something 和 ?

我什么时候用过?它的工作原理，但是当我使用 :something 这样的查询

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$sql = 插入食物(食物名称)值(:food_name)

然后当我打电话时出现错误

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$mysqli_object->prepare($sql);

错误信息听起来像这样

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用户错误！你有一个错误SQL 语法；检查手册对应于您的 MySQL 服务器使用正确语法的版本':food_name)' 附近

但是当我使用?作为占位符，一切正常，我使用 PHP 5.3.1 和 MySQL 5.1.41

我错过了什么地方，任何帮助将不胜感激，谢谢

解决方案

mysqli 不支持命名占位符.

PDO 使用 bindParam 或 execute.

(请注意，每个查询只能使用一次命名占位符.它们并不是非常有用.)

hi im using mysqli and i saw some examples using placeholder like :something and ?

when i used ? its working, but when i used :something in query like this

$sql = INSERT INTO food(food_name) VALUES(:food_name)

then error showed up when i called

$mysqli_object->prepare($sql);

error message sounds like this

User Error! You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ':food_name)' at line

but when i used ? as the placeholder, everything working well, i used PHP 5.3.1 and MySQL 5.1.41

am i missed somewhere, any help will be appreciated thanks

解决方案

mysqli does not support named placeholders.

PDO does, using either bindParam or execute.

(Careful, you can only use a named placeholder once per query. They aren't too incredibly useful.)