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ZipArchive::setExternalAttributesName	ZipArchive::setMtimeName

ZipArchive	Last updated: Mon, 26 Oct 2026

ZipArchive::setMtimeIndex

(PHP >= 8.0.0, PECL zip >= 1.16.0)

ZipArchive::setMtimeIndex — Set the modification time of an entry defined by its index

Description

public function ZipArchive::setMtimeIndex(int $index, int $timestamp, int $flags = 0): bool

Set the modification time of an entry defined by its index.

Parameters

index: Index of the entry.
timestamp: The modification time (unix timestamp) of the file.
flags: Optional flags, unused for now.

Return Values

Returns true on success or false on failure.

Examples

This example creates a ZIP file archive test.zip and add the file test.txt with its modification date.

Example #1 Archive a file

<?php
$zip = new ZipArchive();
if ($zip->open('test.zip', ZipArchive::CREATE) === TRUE) {
    $zip->addFile('text.txt');
    $zip->setMtimeIndex(0, mktime(0,0,0,12,25,2019));
    $zip->close();
    echo "Ok\n";
} else {
    echo "KO\n";
}
?>

Notes

Note:
This function is only available if built against libzip ≥ 1.0.0.

See Also

ZipArchive::setMtimeName() - Set the modification time of an entry defined by its name

ZipArchive::setExternalAttributesName	ZipArchive::setMtimeName

ZipArchive	Last updated: Mon, 26 Oct 2026