Activate and deactivate error handling with exceptions

# RarException::setUsingExceptions

(PECL rar >= 2.0.0)

RarException::setUsingExceptions — Activate and deactivate error handling with exceptions

### Beschreibung

public static function RarException::setUsingExceptions(bool `$using_exceptions`): void

If and only if the argument is `true`, then, instead of emitting warnings and returning a special value indicating error when the UnRAR library encounters an error, an exception of type RarException will be thrown.

Exceptions will also be thrown for the following errors, which occur outside the library (their error code will be -1):

- attempting some operations on a closed RarArchive object or a RarEntry object relative to the first;
- attempting to get an entry that does not exist with RarArchive::getEntry().

### Parameter-Liste

`using_exceptions`
  Should be `true` to activate exception throwing, `false` to deactivate (the default).

### Rückgabewerte

Es wird kein Wert zurückgegeben.

### Beispiele

Beispiel #1 RarException::setUsingExceptions() example

`<?php
var_dump(RarException::isUsingExceptions());
$arch = RarArchive::open("does_not_exist.rar");
var_dump($arch);
RarException::setUsingExceptions(true);
var_dump(RarException::isUsingExceptions());
$arch = RarArchive::open("does_not_exist.rar");
var_dump($arch); //not reached
?>`

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

    bool(false)

    Warning: RarArchive::open(): Failed to open does_not_exist.rar: ERAR_EOPEN (file open error) in C:\php_rar\trunk\tests\test.php on line 3
    bool(false)
    bool(true)

    Fatal error: Uncaught exception 'RarException' with message 'unRAR internal error: Failed to open does_not_exist.rar: ERAR_EOPEN (file open error)' in C:\php_rar\trunk\tests\test.php:8
    Stack trace:
    #0 C:\php_rar\trunk\tests\test.php(8): RarArchive::open('does_not_exist....')
    #1 {main}
      thrown in C:\php_rar\trunk\tests\test.php on line 8

### Siehe auch

- RarException::isUsingExceptions() - Check whether error handling with exceptions is in use

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