(PHP 5 >= 5.2.0, PHP 7, PECL zip >= 1.5.0)
ZipArchive::renameIndex — Renames an entry defined by its index
public ZipArchive::renameIndex ( int $index , string $newname ) : bool
Renames an entry defined by its index.
index
Index of the entry to rename.
newname
New name.
 Returns true on success or false on failure. 
Example #1 Rename one entry
<?php
$zip = new ZipArchive;
$res = $zip->open('test.zip');
if ($res === TRUE) {
    $zip->renameIndex(2,'newname.txt');
    $zip->close();
} else {
    echo 'failed, code:' . $res;
}
?> 
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    https://www.php.net/manual/en/ziparchive.renameindex.php