# Phar::offsetUnset

(PECL phar:1.0.0-1.2.1)

Phar::offsetUnset — remove a file from a phar

### Description

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

This is an implementation of the ArrayAccess interface allowing direct manipulation of the contents of a Phar 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 a Phar.

### Return Values

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

### Errors/Exceptions

if phar.readonly is 1, BadMethodCallException is thrown, as modifying a Phar is only allowed when phar.readonly is set to 0. Throws PharException if there are any problems flushing changes made to the Phar archive to disk.

### Examples

Example#1 A Phar::offsetUnset() example

`<?php
$p = new Phar('/path/to/my.phar', 0, 'my.phar');
try {
// deletes file.txt from my.phar by calling offsetUnset
unset($p['file.txt']);
} catch (Exception $e) {
echo 'Could not delete file.txt: ', $e;
}
?>`

### See Also

- Phar::offsetExists()
- Phar::offsetGet()
- Phar::offsetSet()