PHP Extension

Extract a Single ZIP Entry While Preserving Its Stored Path

See more Zip Examples

This example demonstrates how to use the ZipEntry.Extract method to extract a single entry from a ZIP archive.

The example first creates a ZIP archive containing a text file. It then re-opens the ZIP, finds the entry, and extracts it to a base directory.

The Extract method uses the relative path stored within the ZIP entry. Any required subdirectories are created automatically beneath the specified base directory.

PHP Extension

<?php

include("chilkat.php");

$success = false;

// ------------------------------------------------------------
// First create a sample ZIP archive containing a small text file.

$zip = new CkZip();

$success = $zip->NewZip('c:/temp/sampleText.zip');
if ($success == false) {
    print $zip->lastErrorText() . "\n";
    exit;
}

// Add a small text file from memory.
$success = $zip->AddString('myApp/docs/hello.txt','Hello from a ZIP entry!','utf-8');
if ($success == false) {
    print $zip->lastErrorText() . "\n";
    exit;
}

// Write the ZIP archive to disk and close it.
$success = $zip->WriteZipAndClose();
if ($success == false) {
    print $zip->lastErrorText() . "\n";
    exit;
}

// ------------------------------------------------------------
// Now open the ZIP archive we just created.

$zip2 = new CkZip();

$success = $zip2->OpenZip('c:/temp/sampleText.zip');
if ($success == false) {
    print $zip2->lastErrorText() . "\n";
    exit;
}

// Find the entry by its stored ZIP path.
$entry = new CkZipEntry();

$success = $zip2->EntryOf('myApp/docs/hello.txt',$entry);

if ($success == false) {
    print 'Entry not found.' . "\n";
    exit;
}

// Extract this single entry to the base directory:
// 
//     c:/temp/extracted
// 
// Because the entry's stored path is:
// 
//     myApp/docs/hello.txt
// 
// the file will be extracted to:
// 
//     qa_output/extracted/myApp/docs/hello.txt
// 
// The required subdirectories are created automatically.
$success = $entry->Extract('c:/temp/extracted');
if ($success == false) {
    print $entry->lastErrorText() . "\n";
    exit;
}

$zip2->CloseZip();

print 'Entry extracted successfully.' . "\n";

?>