[RS324]

כמה שטויות באשכול אחד... יש בעיות מסויימות עבור SETCOOKIE
הנה קטע מתוך PHP.NET

the "bug" that prevents cookies from working properly with Windows XP and Internet Explorer 6 seems to be a more strict following of the cookie specifications. This part in particular:

Only hosts within the specified domain can set a cookie for a domain and domains must have at least two (2) or three (3) periods in them to prevent domains of the form: ".com", ".edu", and "va.us". Any domain that fails [sic] within one of the seven special top level domains listed below only require two periods. Any other domain requires at least three. The seven special top level domains are: "COM", "EDU", "NET", "ORG", "GOV", "MIL", and "INT".

localhost should not work. Neither should localhost.localdomain. Though, it may be a bug that 127.0.0.1 does not work, even despit the fact that 127.0.0.1 is not a domain name.

בד"כ הפתרון הוא לעשות COOKIES דרך הפונקציה header.