PHP Zip压缩 在线对文件进行压缩的函数

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复制代码 代码如下:
/* creates a compressed zip file */
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
$valid_files = array();
//if files were passed in...
if(is_array($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;
}
}
/***** Example Usage ***/
$files=array(''file1.jpg'', ''file2.jpg'', ''file3.gif'');
create_zip($files, ''myzipfile.zip'', true);

PHP Zip 文件在线解压缩的函数代码