List files in .7z, .rar and .tar archives using PHP -


i want list files inside archive, without extraction.

the types of archives interested in:

  • .7z (7-zip)
  • .rar (winrar)
  • .tar (posix, e.g. gnu tar).
  • .zip (iso standard, e.g. winzip)

for .zip files, have been able achieve this:

<?php     $za = new ziparchive();     $za->open('thezip.zip');     ($i = 0; $i < $za->numfiles; $i++) {         $stat = $za->statindex($i);         print_r(basename($stat['name']) . php_eol);     } ?>

however, have not managed same .7z files. haven’t tested .rar , .tar, need them well.

this has come before (for various reasons this , this , the 1 broken links in answer).

generally prevailing opinion @ moment create wrapper (either diy or use a library) relies on having 7-zip binary (executable) accessible on server , wrap calls binary using exec(), rather pure php solution.

since 7zip format supports variety of compression algorithms, i'm assuming want pure php implementation of reading/decompressing lzma format. while there lzma sdks available c, c++, c# , java , has made php extension lzma2 (and fork lzma) yet though there has been interest on 7-zip forums quite while, no 1 seems have ported on comprehensive pecl extension or pure php yet.

depending on needs & motivation, leaves with:

  • add 7-zip binary server, , use wrapper library, own or someone else's
  • install , use unofficial pecl extension
  • bravely port lzma sdk php (and contribute open source!)

for other formats can php documentation examples , details on usage:

since of these involve pecl extensions, if you're limited webhost in way , need pure php solutions this, might easier shift more amenable webhost.

to attempt protect against zip bombs, can @ compression ratios suggested this answer (packed size divided unpacked size , treat on threshold invalid), although zip bomb talked answer 1 of linked questions indicate can ineffective against multi-layered zip bombs. need @ whether or not files you're listing archives well, ensuring you're not doing kind of recursive extraction , treat archives contain archives invalid.

for completeness, usage examples official pecl extensions:

rar:

<?php // open archive file $archive = rararchive::open('archive.rar'); // make sure it's valid if ($archive === false) return; // retrieve list of entries in archive $entries = $archive->getentries(); // make sure entry list valid if ($entries === false) return; // example output of entry count echo "found ".count($entries)." entries.\n"; // loop on entries foreach ($entries $e) {     echo $e->getname()."\n"; } // close archive file $archive->close(); ?>

tar:

<?php // open archive file try {     $archive = new phardata('archive.tar'); } // make sure it's valid catch (unexpectedvalueexception $e) {     return; } // make sure entry list valid if ($archive->count() === 0) return; // example output of entry count echo "found ".$archive->count()." entries.\n"; // loop on entries (phardata list of entries in archive) foreach ($archive $entry) {     echo $entry."\n"; } // no need close phardata ?>

zip (adapted op's question here):

<?php // open archive file $archive = new ziparchive; $valid = $archive->open('archive.zip'); // make sure it's valid (if not ziparchive::open() returns various error codes) if ($valid !== true) return; // make sure entry list valid if ($archive->numfiles === 0) return; // example output of entry count echo "found ".$archive->numfiles." entries.\n"; // loop on entries ($i = 0; $i < $archive->numfiles; $i++) {     $e = $archive->statindex($i);     echo $e['name']."\n"; } // close archive file (redundant called automatically @ end of script) $archive->close(); ?>

gz:

since gz (gnu zlib) compression mechanism rather archive format, different in php. if open .gz file (rather treating .tar) gzopen(), reads transparently decompressed. since commonly .tar.gz, can treat .tar above (also see this answer on question). or can extract tar phardata::decompress() in this answer on question.


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