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27 lines
1.1 KiB
Markdown
27 lines
1.1 KiB
Markdown
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[CLOSE](CLOSE) closes an open file or port using the number(s) assigned in an [OPEN](OPEN) statement.
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## Syntax
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> [CLOSE](CLOSE) [fileNumber[, ...]]
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## Parameter(s)
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* fileNumber indicates the file or list of file numbers to close. When not specified, all open files are closed.
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## Description
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* A file must be closed when changing to another file mode.
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* [CLOSE](CLOSE) files when they are no longer needed, in order to save memory.
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* Files cannot be opened in the same [OPEN](OPEN) mode using another number until the first one is closed.
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* Use holding variables for each file number returned by [FREEFILE](FREEFILE) so that the file reference is known.
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* Will not return an error if a filenumber is already closed or was never opened. It does not verify that a file was closed.
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* [CLEAR](CLEAR) can be used to close all open files.
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* [CLOSE](CLOSE) can also be used to close an open TCP/IP connection using a handle returned by **QB64**.
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## See Also
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* [OPEN](OPEN), [OPEN COM](OPEN-COM)
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* [_OPENCLIENT](_OPENCLIENT), [_OPENHOST](_OPENHOST)
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* [_OPENCONNECTION](_OPENCONNECTION)
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* [_SNDCLOSE](_SNDCLOSE)
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