note 50634 added to language.operators.logical

How can I assign a value for variable if it's not defined at the beginning? <? if ( !$variable ) { $variable=0; } // this dosen't work ?> ---- Manual Page -- http://www.php.net/manual/en/language.operators.logical.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+50634 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+50634&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+50634&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+50634&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+50634&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+50634&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+50634&report=yes Search -- http://master.php.net/manage/user-notes.php