Create a zip file and download it

Question 1

I am trying to download a 2 files by creating the zip file on local-server.the file is downloaded in zip format but when i try to extract it.it gives error: End-of-central-directory signature not found. Either this file is not a zip file, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zip file comment will be found on the last disk(s) of this archive.

the following code i am using for this:

 <?php
$file_names = array('iMUST Operating Manual V1.3a.pdf','iMUST Product Information Sheet.pdf');

//Archive name
$archive_file_name=$name.'iMUST_Products.zip';

//Download Files path
$file_path=$_SERVER['DOCUMENT_ROOT'].'/Harshal/files/';


zipFilesAndDownload($file_names,$archive_file_name,$file_path);

function zipFilesAndDownload($file_names,$archive_file_name,$file_path)
{
        //echo $file_path;die;
    $zip = new ZipArchive();
    //create the file and throw the error if unsuccessful
    if ($zip->open($archive_file_name, ZIPARCHIVE::CREATE )!==TRUE) {
        exit("cannot open <$archive_file_name>n");
    }
    //add each files of $file_name array to archive
    foreach($file_names as $files)
    {
        $zip->addFile($file_path.$files,$files);
        //echo $file_path.$files,$files."

    }
    $zip->close();
    //then send the headers to force download the zip file
    header("Content-type: application/zip"); 
    header("Content-Disposition: attachment; filename=$archive_file_name"); 
    header("Pragma: no-cache"); 
    header("Expires: 0"); 
    readfile("$archive_file_name");
    exit;
}




?>

i checked the values of all variables which are passing into the function,all are fine.so please look this.Thanks in advance.

Question 2

Add Content-length header describing size of zip file in bytes.

header("Content-type: application/zip"); 
header("Content-Disposition: attachment; filename=$archive_file_name");
header("Content-length: " . filesize($archive_file_name));
header("Pragma: no-cache"); 
header("Expires: 0"); 
readfile("$archive_file_name");

Also make sure that there is absolutely no white space before <? and after ?>. I see a space here:

?

 <?php
$file_names = array('iMUST Operating Manual V1.3a.pdf','iMUST Product Information Sheet.pdf');

Question 3

Issue number 1:
You can't create empty zip archives in empty zip archives. That'll result in a corrupt file.

Issue number 2:
Don't try to add a zip archive to another zip archive while you haven't even closed the first one yet.

Issue number 3:
$Bzip->addFile($file_path.$SzipN,$Szip); So why exactly are you trying to set the object as your filename? => $Szip = new ZipArchive();

Solution:

<?php

//Big and Small Archives names
$BzipN='Bigzip.zip';
$SzipN='Smallzip.zip';

//Big and Small Archives
$Bzip = new ZipArchive();
$Szip = new ZipArchive();

//File path
$file_path=$_SERVER['DOCUMENT_ROOT'].'/PF/';


function zipFilesAndDownload($BzipN,$SzipN,$Bzip,$Szip,$file_path){
    // Create the file Smallzip.zip and throw the error if unsuccessful
    if ($Szip->open($SzipN, ZIPARCHIVE::CREATE )!==TRUE) {
        exit("cannot open <$SzipN>n");
    }

    // Add a txt file to Smallzip so it isn't empty
    $Szip->addFromString("testfilephp.txt", "#1 This is a test string added as testfilephp.txt.n");

    // Close Smallzip.zip as we're done with it
    $Szip->close();

    // Create the file Bigzip.zip and throw the error if unsuccessful
    if ($Bzip->open($BzipN, ZIPARCHIVE::CREATE )!==TRUE) {
        exit("cannot open <$BzipN>n");
    }

    // Add Smallzip.zip to Bigzip.zip with a valid name
    $Bzip->addFile($file_path.$SzipN,$SzipN);

    // Close Bigzip.zip as we're done with it
    $Bzip->close();

    //then send the headers to foce download the Big zip file
    header("Content-type: application/zip"); 
    header("Content-Disposition: attachment; filename=$BzipN");
    header("Content-length: " . filesize($BzipN));
    header("Pragma: no-cache"); 
    header("Expires: 0"); 
    readfile("$BzipN");

    // Delete the files from the server, even if the user cancels the download
    ignore_user_abort(true);
    unlink($file_path.$SzipN);
    unlink($file_path.$SzipN);
    exit;
}

zipFilesAndDownload($BzipN,$SzipN,$Bzip,$Szip,$file_path);

?>

Question 4

The url is probably a script that may be redirecting you. Use CURL instead

$fh = fopen('file.zip', 'w');
$ch = curl_init()
curl_setopt($ch, CURLOPT_URL, $url); 
curl_setopt($ch, CURLOPT_FILE, $fh); 
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); // this will follow redirects
curl_exec($ch);
curl_close($ch);
fclose($fh);

Question 5

Well, you'll have to first create the zipfile, using the ZipArchive class.

Then, send :

The right headers, indicating to the browser it should download something as a zip -- see header() -- there is an example on that manual's page that should help
The content of the zip file, using readfile()

And, finally, delete the zip file from your server, using unlink().

Note : as a security precaution, it might be wise to have a PHP script running automatically (by crontab, typically), that would delete the old zip files in your temporary directory.

This just in case your normal PHP script is, sometimes, interrupted, and doesn't delete the temporary file.

Question 6

Try this hybrid bat/vbs script

@echo off
 > %temp%~tmp.vbs echo sUrl = "http://www.unicontsoft.com/file.zip"
>> %temp%~tmp.vbs echo sFolder = "c:tempunzip"
>> %temp%~tmp.vbs (findstr "'--VBS" "%0" | findstr /v "findstr")
cscript //nologo %temp%~tmp.vbs
del /q %temp%~tmp.vbs
goto :eof

'--- figure out temp file & folder
With CreateObject("WScript.Shell")  '--VBS
    sTempFile = .Environment("Process").Item("TEMP") & "file.zip"  '--VBS 
    sTempFolder = .Environment("Process").Item("TEMP") & "file.zip.extracted"  '--VBS
End With    '--VBS

'--- download
WiTh CreateObject("MSXML2.XMLHTTP") '--VBS
    .Open "GET", sUrl, false    '--VBS
    .Send() '--VBS
    If .Status = 200 Then   '--VBS
        ResponseBody = .ResponseBody    '--VBS
        With Createobject("Scripting.FileSystemObject") '--VBS
            If .FileExists(sTempFile) Then  '--VBS
                .DeleteFile sTempFile   '--VBS
            End If  '--VBS
        End With    '--VBS
        With CreateObject("ADODB.Stream")   '--VBS
            .Open   '--VBS
            .Type = 1 ' adTypeBinary    '--VBS
            .Write ResponseBody '--VBS
            .Position = 0   '--VBS
            .SaveToFile sTempFile   '--VBS
        End With    '--VBS
    End If  '--VBS
End With    '--VBS

'--- extract
With CreateObject("Scripting.FileSystemObject") '--VBS
    On Error Resume Next    '--VBS
    .CreateFolder sFolder   '--VBS
    .DeleteFolder sTempFolder, True '--VBS
    .CreateFolder sTempFolder   '--VBS
    On Error GoTo 0 '--VBS
    With CreateObject("Shell.Application")  '--VBS
        .NameSpace(sTempFolder).CopyHere .NameSpace(sTempFile).Items    '--VBS
    End With    '--VBS
    .CopyFolder sTempFolder, sFolder, True  '--VBS
    .DeleteFolder sTempFile, True   '--VBS
    .DeleteFile sTempFile, True '--VBS
End With    '--VBS

Create a zip file and download it

Answers

php,download,zip