note 106528 added to function.ziparchive-statindex

The CRC returned from this method is a signed number and so can be negative. This isn't how most CRC's are represented and so can cause problems. Another thing to know is that the standerd CRC algorithm used for zip files is CRC32b. So to put this together lets say that you wanted to extract the first file from a zip and then compare the original CRC with the CRC for the extracted file this is what you would need to do. (proper error checking is omitted for simplicity). $zip = new ZipArchive(); $zip->open("myZip.zip"); $stat = $zip->statIndex( 0 ); $name = $stat['name']; $oldCrc = $stat['crc']; $zip->extractTo("myPath", $name); $newCrc = hexdec(hash_file("crc32b", "myPath/" . $name)); // Have to test both cases as the unsigned CRC from within the zip might appear negative as a signed int. if($newCrc !== $oldCrc && ($oldCrc + 4294967296) !== $newCrc) { echo "The files don't match!"; } ---- Server IP: 69.147.83.197 Probable Submitter: 195.10.250.233 ---- Manual Page -- http://www.php.net/manual/en/function.ziparchive-statindex.php Edit -- https://master.php.net/note/edit/106528 Del: integrated -- https://master.php.net/note/delete/106528/integrated Del: useless -- https://master.php.net/note/delete/106528/useless Del: bad code -- https://master.php.net/note/delete/106528/bad+code Del: spam -- https://master.php.net/note/delete/106528/spam Del: non-english -- https://master.php.net/note/delete/106528/non-english Del: in docs -- https://master.php.net/note/delete/106528/in+docs Del: other reasons-- https://master.php.net/note/delete/106528 Reject -- https://master.php.net/note/reject/106528 Search -- https://master.php.net/manage/user-notes.php