PHP code to compress a folder into a zip file_PHP tutorial

1. Please download the zip.php tool class I prepared first, unzip it after downloading, and put the files inside into the corresponding directory. I put it in the include folder under the virtual directory.
2. Add the following code to your php file

Copy the code The code is as follows:

require_once " ./include/zip.php";
$zip = new PHPZip();
//$zip -> createZip("Directory address of the folder to be compressed", "Compressed file name.zip "); //Only generate and not automatically download
$zip -> downloadZip("Directory address of the folder to be compressed", "Compressed file name.zip"); //Automatically download

Example: You can refer to the following pseudo-code to see a specific usage scenario:
Code

Copy code The code is as follows:

require_once "./include/zip.php";
if (!$download) {
exit();
}
set_time_limit(60);
$ tmpManager = new TmpManager(); //Assume we have a class to complete the following operations
$tempfolder = array();
$tempfile = array();
//Assume we pass the page Select the checkbox to download the selected folder or file and package it together
for($i = 0;$i < $checkboxnum;$i++) {
$value = ${"select".$ i};
if ($value != '') {
$this_type = substr($value, 0, 1);
$this_id = substr($value, 1);
/ / Handle folders and files separately
if ($this_type == 'd') {
$tempfolder[] = $this_id;
}
elseif ($this_type == 'f ') {
$tempfile[] = $this_id;
}
}
}
@mkdir($tempdir);
$curtempdir = "$tempdir/".$userid ; //Different users operate in different temporary folders
if (file_exists($curtempdir)) {
$tmpManager->DeleteDir($curtempdir); //Delete old folders
}
if (sizeof($tempfolder) > 0 || sizeof($tempfile) > 0) {
mkdir($curtempdir, 0777); //If there are files or folders to be packaged, recreate them Folder
}
if (sizeof($tempfile) > 0) {
$tmpManager->CopyFile($tempfile,$curtempdir); //Copy the file to be downloaded to the created folder
}
if (sizeof($tempfolder) > 0) {
$tmpManager->CopyFolder($tempfolder,$curtempdir); //Copy the folder to be downloaded to the created folder
}
$zip = new PHPZip();
$zip -> downloadZip($curtempdir, "file_".date('Ymd').".zip"); //Package and download

zip.php

Copy code The code is as follows:

/*
    File name: /include/zip.php
    Author:    Horace 2009/04/15
*/
class PHPZip{
    var $dirInfo = array("0","0");
    var $rootDir = '';
    var $datasec = array();
    var $ctrl_dir = array();
    var $eof_ctrl_dir = "x50x4bx05x06x00x00x00x00";
    var $old_offset = 0;

    function downloadZip(){
        createZip($dir, $zipfilename, true);
    }
    function createZip($dir, $zipfilename, $autoDownload = false){
        if (@function_exists('gzcompress')){
            @set_time_limit("0");
            if (is_array($dir)){
                $fd = fopen ($dir, "r");
                $fileValue = fread ($fd, filesize ($filename));
                fclose ($fd);
                if (is_array($dir)) $filename = basename($dir);
                $this -> addFile($fileValue, "$filename");
            }else{
                $this->dirTree($dir,$dir);
            }

            $zipfilenametemp = time().$zipfilename;
            $out = $this -> filezip();
            $fp = fopen($zipfilenametemp, "w");
            fwrite($fp, $out, strlen($out));
            fclose($fp);
            $filesize = filesize($zipfilenametemp);

            if ($filesize < 104857600) {
                if($autoDownload){
                    header("Content-type: application/octet-stream");
                    header("Content-disposition: attachment; filename=".$zipfilename);
                }
                echo $this -> filezip();
            }else{
                echo "create zip error!";
            }
            unlink($zipfilenametemp);
        }
     }
    //get dir tree..
    function dirTree($directory,$rootDir){
        global $_SERVER,$dirInfo,$rootDir;

        $fileDir=$rootDir;
        $myDir=dir($directory);
        while($file=$myDir->read()){
            if(is_dir("$directory/$file") and $file!="." and $file!=".."){
                $dirInfo[0]++;
                $rootDir ="$fileDir$file/";

                $this -> addFile('', "$rootDir");

                //go on n's folders
                $this->dirTree("$directory/$file",$rootDir);
            }else{
                if($file!="." and $file!=".."){
                    $dirInfo[1]++;
                    //$fd = fopen ("$directory/$file", "r");
                    $fileValue = file_get_contents("$directory/$file");
                    //fclose ($fd);
                    $this -> addFile($fileValue, "$fileDir$file");
                }
            }
        }
        $myDir->close();
    }
function unix2DosTime($unixtime = 0) {
$timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);

if ($timearray['year'] < 1980) {
     $timearray['year'] = 1980;
     $timearray['mon'] = 1;
     $timearray['mday'] = 1;
     $timearray['hours'] = 0;
     $timearray['minutes'] = 0;
     $timearray['seconds'] = 0;
} // end if

return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |
($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
}
function addFile($data, $name, $time = 0){
$name = str_replace('\', '/', $name);

$dtime = dechex($this->unix2DosTime($time));
$hexdtime = 'x' . $dtime[6] . $dtime[7]
. 'x' . $dtime[4] . $dtime[5]
. 'x' . $dtime[2] . $dtime[3]
. 'x' . $dtime[0] . $dtime[1];
eval('$hexdtime = "' . $hexdtime . '";');

$fr = "x50x4bx03x04";
$fr .= "x14x00"; // ver needed to extract
$fr .= "x00x00"; // gen purpose bit flag
$fr .= "x08x00"; // compression method
$fr .= $hexdtime; // last mod time and date

// "local file header" segment
$unc_len = strlen($data);
$crc = crc32($data);
$zdata = gzcompress($data);
$c_len = strlen($zdata);
$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
$fr .= pack('V', $crc); // crc32
$fr .= pack('V', $c_len); // compressed filesize
$fr .= pack('V', $unc_len); // uncompressed filesize
$fr .= pack('v', strlen($name)); // length of filename
$fr .= pack('v', 0); // extra field length
$fr .= $name;

// "file data" segment
$fr .= $zdata;

// "data descriptor" segment (optional but necessary if archive is not
// served as file)
$fr .= pack('V', $crc); // crc32
$fr .= pack('V', $c_len); // compressed filesize
$fr .= pack('V', $unc_len); // uncompressed filesize

// add this entry to array
$this -> datasec[] = $fr;
$new_offset = strlen(implode('', $this->datasec));

// now add to central directory record
$cdrec = "x50x4bx01x02";
$cdrec .= "x00x00"; // version made by
$cdrec .= "x14x00"; // version needed to extract
$cdrec .= "x00x00"; // gen purpose bit flag
$cdrec .= "x08x00"; // compression method
$cdrec .= $hexdtime; // last mod time & date
$cdrec .= pack('V', $crc); // crc32
$cdrec .= pack('V', $c_len); // compressed filesize
$cdrec .= pack('V', $unc_len); // uncompressed filesize
$cdrec .= pack('v', strlen($name) ); // length of filename
$cdrec .= pack('v', 0 ); // extra field length
$cdrec .= pack('v', 0 ); // file comment length
$cdrec .= pack('v', 0 ); // disk number start
$cdrec .= pack('v', 0 ); // internal file attributes
$cdrec .= pack('V', 32 ); // external file attributes - 'archive' bit set

$cdrec .= pack('V', $this -> old_offset ); // relative offset of local header
$this -> old_offset = $new_offset;

$cdrec .= $name;

// optional extra field, file comment goes here
// save to central directory
$this -> ctrl_dir[] = $cdrec;
}
function filezip(){
$data = implode('', $this -> datasec);
$ctrldir = implode('', $this -> ctrl_dir);

return
$data .
$ctrldir .
$this -> eof_ctrl_dir .
pack('v', sizeof($this -> ctrl_dir)) . // total # of entries "on this disk"
pack('v', sizeof($this -> ctrl_dir)) . // total # of entries overall
pack('V', strlen($ctrldir)) . // size of central dir
pack('V', strlen($data)) . // offset to start of central dir
"x00x00"; // .zip file comment length
}
}
?>

zip.php文件打包

http://www.bkjia.com/PHPjc/320928.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/320928.htmlTechArticle1.请先下载我准备好的zip.php工具类，下载后解压，将里面的文件放入对应的目录中，我是放在虚拟目录下的include文件夹中。 2.在你的php文件...