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# bzwrite

(PHP 4 >= 4.3.3, PHP 5)

bzwrite -- Binary safe bzip2 file write

## 说明

int bzwrite ( resource bz, string data [, int length] )

bzwrite() writes a string into the given bzip2 file stream.

## 参数

`bz`

  The file pointer. It must be valid and must point to a file successfully opened by bzopen().

`data`

  The written data.

`length`

  If supplied, writing will stop after `length` (uncompressed) bytes have been written or the end of `data` is reached, whichever comes first.

## 返回值

Returns the number of bytes written, or `FALSE` on error.

## 范例

例 1. bzwrite() example

`<?php $str = "uncompressed data"; $bz = bzopen("/tmp/foo.bz2", "w"); bzwrite($bz, $str, strlen($str)); bzclose($bz); ?>`

## 参见

bzread()
bzopen()

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