gzencode Create a gzip compressed string &reftitle.description; stringgzencode stringdata intlevel-1 intencoding_modeFORCE_GZIP This function returns a compressed version of the input data compatible with the output of the gzip program. For more information on the GZIP file format, see the document: GZIP file format specification version 4.3 (RFC 1952). &reftitle.parameters; data The data to encode. 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. encoding_mode The encoding mode. Can be FORCE_GZIP (the default) or FORCE_DEFLATE. Prior to PHP 5.4.0, using FORCE_DEFLATE results in a standard zlib deflated string (inclusive zlib headers) after a gzip file header but without the trailing crc32 checksum. In PHP 5.4.0 and later, FORCE_DEFLATE generates RFC 1950 compliant output, consisting of a zlib header, the deflated data, and an Adler checksum. &reftitle.returnvalues; The encoded string, or &false; if an error occurred. &reftitle.changelog; &Version; &Description; 5.4.0 FORCE_DEFLATE now generates RFC 1950 compliant output. 4.2.0 The encoding_mode parameter was added &reftitle.examples; The resulting data contains the appropriate headers and data structure to make a standard .gz file, e.g.: ]]> &reftitle.seealso; gzdecode gzdeflate gzinflate gzuncompress gzcompress ZLIB Compressed Data Format Specification (RFC 1950)