vim复制一个php函数

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```
进入vim编辑器

将光标放在函数中间，然后输入

`va{Vy`即可复制一个整个函数

Place the cursor somewhere in my method,

`va{` to visually select the the code block,

`V` to turn the selection from character-wise to line-wise,

`y` to yank