CPU还拥有一些控制「取出和执行（Fetch-and-execute）用途的暂存器，如下所示： 指令暂存器（Instruction Register，IR）：储存目前执行的机器语言指令。
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Indeed, the time to fetch information from a repository — be it a file or database server — far exceeds the lapse required to compile and perhaps even execute a PHP program.
实际上，用于从存储库(文件或数据库服务器)中获取信息的时间远高于编译并且甚至是执行PHP程序所需耗费的时间。
Db2 LUW provides the db2batch utility to determine The Times that an SQL statement spends in each of the three phases (prepare, execute, and fetch).
db 2 LUW提供db 2 batch工具来确定一个sql语句在三个阶段(准备、执行和取回)中的每个阶段中花费的时间。
Each mapped page is restricted in the types of operations that may be performed on its contents: read, write, and instruction fetch (also called execute).
每个被映射的页面都有读、写以及取指令(也叫执行)的限制。
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