PHP Extension

Iterate Through ZIP Entries Using EntryAt and ZipEntry.GetNext

See more Zip Examples

This example demonstrates how to iterate through all entries in a ZIP archive using:

• Zip.EntryAt to obtain the first entry
• ZipEntry.GetNext to advance through the remaining entries

The example prints each ZIP entry's stored filename and whether the entry is a file or directory.

This approach is useful when sequentially processing ZIP entries without repeatedly calling EntryAt by index.

Suppose the ZIP archive contains:

docs/
docs/readme.txt
images/logo.png
hello.txt

The example iterates through each entry in the order stored within the ZIP archive.

PHP Extension

<?php

include("chilkat.php");

$success = false;

$zip = new CkZip();

// Open an existing ZIP archive.
$success = $zip->OpenZip('c:/temp/example.zip');
if ($success == false) {
    print $zip->lastErrorText() . "\n";
    exit;
}

// A ZIP archive may contain zero entries.
if ($zip->get_NumEntries() == 0) {

    print 'The ZIP archive is empty.' . "\n";

    $zip->CloseZip();
    exit;
}

// ------------------------------------------------------------
// Get the first ZIP entry.
// 
// EntryAt(0,entry) initializes the ZipEntry object so that
// it represents the first entry in the ZIP archive.
// 
$entry = new CkZipEntry();

$success = $zip->EntryAt(0,$entry);
if ($success == false) {
    print $zip->lastErrorText() . "\n";
    exit;
}

// ------------------------------------------------------------
// Iterate through all ZIP entries.
// 
// GetNext updates the same ZipEntry object so that it
// represents the next entry in the ZIP archive.
// 
while (($success == true)) {

    if ($entry->get_IsDirectory() == true) {

        print '[Directory] ' . $entry->fileName() . "\n";

    }
    else {

        print '[File] ' . $entry->fileName() . "\n";
    }

    // Advance to the next entry.
    $success = $entry->GetNext();
}

$zip->CloseZip();

print 'Done.' . "\n";

?>