Re: Array

On Sat, Oct 24, 2009 at 7:59 AM, Ashley Sheridan <ash@ashleysheridan.co.uk>wrote: > On Sat, 2009-10-24 at 06:57 -0400, Ron Piggott wrote: > > > The following line gives me an error message when there aren't any > > values in the array --- how do I accommodate this? > > > > Warning: Invalid argument supplied for foreach() > > > > foreach ($_SESSION['order'] AS $key => $value ) { > > > > > > > Do an isset() on $_SESSION['order'] first to determine if the variable > even exists, then do is_array() to determine if it's an array or not > before trying to iterate it. My guess is that $_SESSION['order'] isn't > an array all the time. > > Thanks, > Ash > http://www.ashleysheridan.co.uk > > > foreach works with array and instances. Unless the class implements Transversable, it's public properties are used on the loop. foreach($object as $prop => $value ) //php translates the foreach into something like this... foreach(get_object_vars($object) as $prop => $value ) -- Martin Scotta