The ftp_mdtm() function returns when the specified file was last modified.

函数的作用是：返回指定文件的最后修改时间。

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Make a note of the name that appears in the "Last Modified By" column.

请注意“Last Modified By”列中出现的名称。

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Make a note of the name that appears in the "Last Modified By" column.

请注意“Last Modified By”列中出现的名称。

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