# PharData::offsetUnset

(PHP 5 >= 5.3.0, PHP 7, PECL phar >= 2.0.0)

PharData::offsetUnset — Remove a file from a tar/zip archive

### Description

PharData::offsetUnset ( string `$offset` ) : bool

This is an implementation of the ArrayAccess interface allowing direct manipulation of the contents of a tar/zip archive using array access brackets. offsetUnset is used for deleting an existing file, and is called by the unset() language construct.

### Parameters

`offset`

  The filename (relative path) to modify in the tar/zip archive.

### Return Values

Returns `TRUE` on success or `FALSE` on failure.

### Errors/Exceptions

Throws PharException if there are any problems flushing changes made to the tar/zip archive to disk.

### Examples

Example #1 A PharData::offsetUnset() example

`<?php
$p = new PharData('/path/to/my.zip');
try {
// deletes file.txt from my.zip by calling offsetUnset
unset($p['file.txt']);
} catch (Exception $e) {
echo 'Could not delete file.txt: ', $e;
}
?>`

### See Also

- Phar::offsetUnset() - Remove a file from a phar