Overview
KB
Technical FAQ
PHP Manual
CSS2 Manual
HTML Manual
JS Guide
JS Reference
PhpDock Manual
Nu-Coder Manual
PhpExpress Manual
PHP Joomla
Development
Learn PHP
 
<ZipArchive::addFileZipArchive::addGlob>
^ZipArchiveLast updated: Mon, 26 Oct 2026

ZipArchive::addFromString

(PHP 5 >= 5.2.0, PHP 7, PHP 8, PECL zip >= 1.1.0)

ZipArchive::addFromString — Add a file to a ZIP archive using its contents

Description

public function ZipArchive::addFromString(string $name, string $content, int $flags = ZipArchive::FL_OVERWRITE): bool

Add a file to a ZIP archive using its contents.

Note:

For maximum portability, it is recommended to always use forward slashes (/) as directory separator in ZIP filenames.

Parameters

name

The name of the entry to create.

content

The contents to use to create the entry. It is used in a binary safe mode.

flags

Bitmask consisting of ZipArchive::FL_OVERWRITE, ZipArchive::FL_ENC_GUESS, ZipArchive::FL_ENC_UTF_8, ZipArchive::FL_ENC_CP437. The behaviour of these constants is described on the ZIP constants page.

Return Values

Returns true on success or false on failure.

Changelog

Version Description
8.0.0, PECL zip 1.18.0 flags was added.

Examples

Example #1 Add an entry to a new archive

<?php
$zip = new ZipArchive;
$res = $zip->open('test.zip', ZipArchive::CREATE);
if ($res === TRUE) {
    $zip->addFromString('test.txt', 'file content goes here');
    $zip->close();
    echo 'ok';
} else {
    echo 'failed';
}
?>

Example #2 Add file to a directory inside an archive

<?php
$zip = new ZipArchive;
if ($zip->open('test.zip') === TRUE) {
    $zip->addFromString('dir/test.txt', 'file content goes here');
    $zip->close();
    echo 'ok';
} else {
    echo 'failed';
}
?>

<ZipArchive::addFileZipArchive::addGlob>
^ZipArchiveLast updated: Mon, 26 Oct 2026