Can I change the compression level of ZipArchive?

Question

Is it possible to change the compression level and/or method used by the ZipArchive class?

Answer 1

This is currently not possible, according to the open bug report feature request on php.net.

Answer 2

As stated in previous post, you can't do it with Zip. If specifying a compression level is more important than the archiving method, then PHP zlib allows it:

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

$level - The level of compression. Can be given as 0 for no compression up to 9 for maximum compression.

http://php.net/manual/en/book.zlib.php

Answer 3

It seems to have been implemented / added to redistribution files in PHP 7: ZipArchive::setCompressionName and ZipArchive::setCompressionIndex. Not tested.

PS: The reason why it is set individually for files and not the entire archive is because files inside a ZIP archive are actually themself ZIP files and are just "glued" together to one "master ZIP archive".

Answer 4

Indeed it is not possible evenin 2014 so i had to use the "exec" function with the zip command for linux :

exec("cd \"".$the_directory_you want_to_zip."\" && zip -0 -r \"".$path_zip."\" .");