PHP Extension

Iterate Over ZIP Entries Using EntryAt

This example demonstrates how to use the EntryAt method to iterate over all entries contained within a ZIP archive.

The EntryAt method retrieves a ZipEntry object for a given zero-based index.

This is useful for:

• Enumerating all entries in a ZIP archive
• Inspecting filenames, sizes, and timestamps
• Searching or filtering ZIP contents

Suppose the ZIP archive contains:

docs/readme.txt
images/logo.png
data/config.json

The example loops through all ZIP entries and prints information about each entry.

PHP Extension

<?php

include("chilkat.php");

$success = false;

$success = false;

// Open an existing ZIP archive.
$zip = new CkZip();

$success = $zip->OpenZip('example.zip');
if ($success == false) {
    print $zip->lastErrorText() . "\n";
    exit;
}

// Get the total number of entries in the ZIP archive.
$numEntries = $zip->get_NumEntries();

print 'Number of ZIP entries = ' . $numEntries . "\n";

// Create a ZipEntry object that will be reused
// for each entry retrieved by EntryAt.
$entry = new CkZipEntry();

// Iterate over all ZIP entries.
$i = 0;
while ($i < $numEntries) {

    // Retrieve the entry at index i.
    $success = $zip->EntryAt($i,$entry);
    if ($success == false) {
        print $zip->lastErrorText() . "\n";
        exit;
    }

    print 'Entry ' . $i . "\n";
    print '  FileName: ' . $entry->fileName() . "\n";
    print '  Uncompressed Length: ' . $entry->get_UncompressedLength() . "\n";
    print '  Compressed Length: ' . $entry->get_CompressedLength() . "\n";
    print '' . "\n";

    $i = $i + 1;
}

// Sample output:
// 
// Entry 0
//   FileName: docs/readme.txt
//   Uncompressed Length: 1204
//   Compressed Length: 512
// 
// Entry 1
//   FileName: images/logo.png
//   Uncompressed Length: 84211
//   Compressed Length: 84102
// 

$zip->CloseZip();

print 'Done.' . "\n";

?>