Php/docs/phar.offsetunset
Phar::offsetUnset
(PHP 5 >= 5.3.0, PHP 7, PECL phar >= 1.0.0)
Phar::offsetUnset — Remove a file from a phar
说明
public Phar::offsetUnset
( string $offset
) : bool
Note:
此方法需要 将
php.ini中的phar.readonly设为0以适合 Phar 对象. 否则, 将抛出PharException.
This is an implementation of the ArrayAccess interface allowing direct manipulation of the contents of a Phar archive using array access brackets. offsetUnset is used for deleting an existing file, and is called by the unset() language construct.
参数
offset- The filename (relative path) to modify in a Phar.
返回值
成功时返回 true， 或者在失败时返回 false。
错误／异常
if phar.readonly is 1,
BadMethodCallException is thrown, as modifying a Phar
is only allowed when phar.readonly is set to 0. Throws
PharException if there are any problems flushing
changes made to the Phar archive to disk.
范例
Example #1 A Phar::offsetUnset() example
<?php$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;}?>
参见
- Phar::offsetExists() - Determines whether a file exists in the phar
- Phar::offsetGet() - Gets a PharFileInfo object for a specific file
- Phar::offsetSet() - Set the contents of an internal file to those of an external file
- Phar::unlinkArchive() - Completely remove a phar archive from disk and from memory
- Phar::delete() - 删除 phar 档案中的一个文件
