One thing to note in terms of backward-compatibility is that the class name closure is now reserved by the PHP engine for storing closures, so any classes that use that name will need to be renamed.
关于向后兼容性值得注意的一点是，PHP引擎现在保留类名closure并用于存储闭包，因此使用该名称的所有类都需要重命名。
For a transaction-safe storage engine, the InnoDB backup ibbackup is preferred. However, do take note of the compatibility issues listed as follows.
对于事务安全的存储引擎，In nodb备份工具ibbackup是首选的。
Do not have to worry about its compatibility, it offers a robust and flexible computing engine.
不必担心它的兼容性，它提供一个强劲且灵活的计算引擎。
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