## Example

`

     string gzcompress ( string $data [, int $level = -1 ] )

`

## Description

This function compress the given string using the ZLIB data format. For details on the ZLIB compression algorithm see the document "» ZLIB Compressed Data Format Specification version 3.3" (RFC 1950). Note: This is not the same as gzip compression, which includes some header data. See gzencode() for gzip compression.

## Return Values

The compressed string or FALSE if an error occurred.