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gzdeflate

(PHP 4 >= 4.0.4, PHP 5)

gzdeflate -- Deflate a string

说明

string gzdeflate ( string data [, int level] )

This function compress the given string using the DEFLATE data format.

For details on the DEFLATE compression algorithm see the document "DEFLATE Compressed Data Format Specification version 1.3" (RFC 1951).

参数

data: The data to deflate.
level: The level of compression. Can be given as 0 for no compression up to 9 for maximum compression. If not given, the default compression level will be the default compression level of the zlib library.

返回值

The deflated string or FALSE if an error occurred.

范例

例子 1. gzdeflate() example
<?php $compressed = gzdeflate('Compress me', 9); echo $compressed; ?>

参见

gzinflate()

gzcompress()

gzuncompress()

gzencode()

add a note User Contributed Notes

denis dot noessler at red-at dot de
17-Jun-2003 06:26


if you have compressed data which is greater than 2 MB (system dependent), you will receive a buffer error by calling the function gzinflate().

be sure to to compress your data by a lower compression level, like 1.

i.e.: gzdeflate($sData, 1);

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gzcompress	上一级	gzencode