note 56029 deleted from function.is-null by mazzanet

Note Submitter: thomas AT pixtur _._ de ---- I use is_null() to trigger warning on access of undefined object-members with php5. Consider this example: ------------------------------- class Obj { public $hello=false; } $obj = new Obj; is_null($obj->hallo) # will at least trigger a WARNING before... $obj->hallo="bla"; # ...adding a new project-member ----------------------------------- I really have a hard time to check, if an variable has been defined. The problem is, that isset() return false, if the values is defined but converted to zero. An is_defined()-function would help, but I could not find one. I know, that I could overwrite __set() but this raises other php5 issues a little but to complex to explain here. If anyone has a better way of testing on definition, PLEASE write me an mail. tom