PHP文件Zip压缩和解压缩

PHP文件 Zip 压缩 /* creates a compressed zip file */

注意：开启PHP zip压缩扩展extension=php_zip.dll

    function create_zip($files=array(),$destination='' ,$overwrite=false) {

         //if the zip file already exists and overwrite is false, return false

         if(file_exists($destination) && !$overwrite) {

             return false;

         }

         //vars $valid_files=a rray();

         //if files were passed in...

         if(is_array($files)) {

             //cycle through each file

             foreach($files as $file) {

                 //make sure the file exists

                 if(file_exists($file)) {

                      $valid_files[]=$file;

                 }

             }

         }

         //if we have good files...

         if(count($valid_files)) {

             //create the archive

             $zip=new ZipArchive();

             if($zip->open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {

                 return false;

             }

             //add the files

             foreach($valid_files as $file) {

                 $zip->addFile($file,$file);

             }

             //debug //echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status;

             //close the zip -- done!

             $zip->close();

             //check to make sure the file exists

             return file_exists($destination);

         } else {

             return false;

         }

    }

    /***** 调用 ***/

    $files=array('file1.jpg', 'file2.jpg', 'file3.gif');

    create_zip($files, 'myzipfile.zip', true);

 PHP解压缩 Zip 文件

/* @file - path to zip file *@destination - destination directory for unzipped files */

    function unzip_file($file, $destination){

         // create object

         $zip = new ZipArchive() ;

         // open archive

         if ($zip->open($file) !== TRUE) {

             die ('Could not open archive');

         }

         // extract contents to destination directory

         $zip->extractTo($destination);

         // close archive

         $zip->close();

         echo 'Archive extracted to directory';

    }