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# gzdeflate

(PHP 4 >= 4.0.4, PHP 5)

gzdeflate -- Deflate a string

## Description

string gzdeflate ( string data [, int level])

This function returns a compressed version of the input `data` using the DEFLATE data format, or `FALSE` if an error is encountered. The optional parameter `level` can be given as 0 for no compression up to 9 for maximum compression. If `level` is not given the default compression level will be the default compression level of the zlib library.

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

See also gzinflate(), gzcompress(), gzuncompress(), gzencode().

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