PHP 4.0 Bug #8115: variable passed by reference incorrectly handled

From: christian@architech.no Operating system: linux PHP version: 4.0.2 PHP Bug Type: Scripting Engine problem Bug description: variable passed by reference incorrectly handled It concerns variables passed by reference... and the unset() function. # Let's define a very simple function that converts an array to a string : function foo(&$a) { $an_array = array("abcdef"); unset($a); for ($i=0; $i<sizeof($an_array); $i++) $a = $a . $an_array[$i]; } # and call it : foo($my_var); # $my_var is NOT EQUAL TO "abcdef" !!!!! However it works fine when we don't try to unset the $a variable. (replacing the line with $a = ""). -- Edit Bug report at: http://bugs.php.net/?id=8115&edit=1