PHP ActiveX Requires Chilkat v11.0.0+

Remove an Entry from an Existing ZIP Using DeleteEntry

See more Zip Examples

This example demonstrates how to use the DeleteEntry method to remove a file from an existing ZIP archive.

The example:

• Creates a ZIP archive containing three text files
• Opens the ZIP archive for modification
• Finds and deletes one entry
• Writes the modified ZIP archive to a new filename

Suppose the original ZIP archive contains:

a.txt
b.txt
c.txt

After deleting b.txt, the modified ZIP archive contains:

a.txt
c.txt

The entry is removed only from the in-memory ZIP object until a Write* method is called.

PHP ActiveX

<?php

$success = 0;

//  ------------------------------------------------------------
//  First create a ZIP archive containing three text files.

$zip = new COM("Chilkat.Zip");

$success = $zip->NewZip('original.zip');
if ($success == 0) {
    print $zip->LastErrorText . "\n";
    exit;
}

$charset = 'utf-8';

$success = $zip->AddString('a.txt','Contents of file A',$charset);
if ($success == 0) {
    print $zip->LastErrorText . "\n";
    exit;
}

$success = $zip->AddString('b.txt','Contents of file B',$charset);
if ($success == 0) {
    print $zip->LastErrorText . "\n";
    exit;
}

$success = $zip->AddString('c.txt','Contents of file C',$charset);
if ($success == 0) {
    print $zip->LastErrorText . "\n";
    exit;
}

//  Write the ZIP archive to disk.
//  
//  The ZIP now contains:
//  
//      a.txt
//      b.txt
//      c.txt
//  
$success = $zip->WriteZipAndClose();
if ($success == 0) {
    print $zip->LastErrorText . "\n";
    exit;
}

//  ------------------------------------------------------------
//  Open the existing ZIP archive for modification.

$zip2 = new COM("Chilkat.Zip");

$success = $zip2->OpenZip('original.zip');
if ($success == 0) {
    print $zip2->LastErrorText . "\n";
    exit;
}

//  Find the entry named "b.txt".
$entry = new COM("Chilkat.ZipEntry");

$success = $zip2->EntryOf('b.txt',$entry);
if ($success == 0) {
    print $zip2->LastErrorText . "\n";
    exit;
}

//  Remove the entry from the in-memory ZIP object.
//  
//  At this point, the original ZIP file on disk is unchanged.
//  The deletion takes effect only after WriteZip or
//  WriteZipAndClose is called.
$success = $zip2->DeleteEntry($entry);
if ($success == 0) {
    print $zip2->LastErrorText . "\n";
    exit;
}

//  Write the modified ZIP archive to a new file.
$zip2->FileName = 'modified.zip';

$success = $zip2->WriteZipAndClose();
if ($success == 0) {
    print $zip2->LastErrorText . "\n";
    exit;
}

//  The modified ZIP now contains:
//  
//      a.txt
//      c.txt
//  

print 'ZIP archive updated successfully.' . "\n";

?>