Create and decompress a zip file instance using the phpZipArchive class-PHP source code

If you are using php versions earlier than php5.2 and cannot use the ZipArchive class, you only need php5.2 and later versions to conveniently use the ZipArchive class to decompress and compress zip files, the following is a small series for you to introduce. If you are using php versions earlier than php5.2 and cannot use the ZipArchive class, you only need php5.2 and later versions to conveniently use the ZipArchive class to decompress and compress zip files, the following is a small series for you to introduce.

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You can also directly read the content in the zip package, which is very convenient. Here we mainly summarize the process of reading and decompressing.

Decompress a package to the specified directory.

The Code is as follows:
$ Zip = new ZipArchive; If ($ zip-> open('test.zip ') === TRUE ){ $ Zip-> extracelist ('/my/destination/dir /'); $ Zip-> close (); Echo 'OK '; } Else { Echo 'failed '; } ?>

If you only need to read the content of a file in the package, you need the file name or the index value of the file.

The Code is as follows:
$ Zip = new ZipArchive; If ($ zip-> open('test.zip ') === TRUE ){ Echo $ zip-> getFromName ('example. php '); $ Zip-> close (); } ?>

If example. php is in a directory, you must add a path to obtain the content.

If you only know the file name, but do not know the specific path of the file, you can search for the index of the specified file name, and then retrieve the content by the index.

The Code is as follows:
$ Zip = new ZipArchive; If ($ zip-> open('test.zip ') === TRUE ){ $ Index = $ zip-> locateName ('example. php', ZIPARCHIVE: FL_NOCASE | ZIPARCHIVE: FL_NODIR ); $ Contents = $ zip-> getFromIndex ($ index ); } ?>

The locateName method is used to obtain the index. If a file with the same name exists in multiple paths in the compressed package, it seems that only the first index can be returned. To obtain the index of all files with the same name, you can only use the stupid method, loop search.

The Code is as follows:
$ Zip = new ZipArchive; If ($ zip-> open('test.zip ') === TRUE ){ For ($ I = 0; $ I <$ zip-> numFiles; $ I ++) { If (substr_count ($ zip-> getNameIndex ($ I), 'example. php')> 0 ){ $ Contents = $ zip-> getFromIndex ($ I ); } } } ?>

I tested php5.3 without any problems and compressed the zip file much faster than the previous zip command.