On Mon, Sep 17, 2012 at 8:57 PM, Camilo Sperberg <unrea...@gmail.com> wrote: > > On 17 sep. 2012, at 10:55, Frank Arensmeier <farensme...@gmail.com> wrote: > >> 17 sep 2012 kl. 10.50 skrev Camilo Sperberg: >> >>> Hello list, I have a little question with PHP's internal working. I've >>> managed to reduce the test to the following lines: >>> >>> $globalVariable = 'i am a global variable'; >>> function testFunction() { >>> global $globalVariable; >>> unset($globalVariable); >>> } >>> >>> testFunction(); >>> >>> if(isset($globalVariable)) { >>> var_dump('global variable IS set'); >>> } else { >>> var_dump('global variable is NOT set'); >>> } >>> >>> >>> >>> When executing the above test, you will get printed that the global >>> variable is set, despite unsetting it in the function. Is it really the >>> intention to unset a global variable inside a function locally or have I >>> just happen to found a little bug? >>> >>> unreal4u-MBP:~ unreal4u$ php --version >>> PHP 5.3.13 with Suhosin-Patch (cli) (built: Jun 20 2012 17:05:20) >>> Copyright (c) 1997-2012 The PHP Group >>> Zend Engine v2.3.0, Copyright (c) 1998-2012 Zend Technologies >>> with Xdebug v2.3.0dev, Copyright (c) 2002-2012, by Derick Rethans >>> >>> If it is expected behavior, is there any documentation on why this is done >>> this way? >>> >>> Greetings and thanks. >>> -- >>> PHP General Mailing List (http://www.php.net/) >>> To unsubscribe, visit: http://www.php.net/unsub.php >>> >> Sometimes, it helps reading the manual... >> >> http://lmgtfy.com/?q=php+unset+global >> >> "If a globalized variable is unset() inside of a function, only the local >> variable is destroyed. The variable in the calling environment will retain >> the same value as before unset() was called." >> [...] >> "To unset() a global variable inside of a function, then use the$GLOBALS >> array to do so:" >> >> Took about 1 minute to find out. >> >> /frank > > Doh! Only thing I can say is that I tried searching but without any relevant > terms… Thanks and also thanks to Simon! > > Greetings.
Just a general note, the PHP manual is pretty good. - Matijn -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php