Passing lont text through php url

I am having trouble passing long text through PHP parameter passing… short text goes through … but invariably long text doesnt end up falling into the database…

i ahve used the following structure for passing the text:

on (release)
{
getURL(“mydomain.com/myphpsender.php?text=” + my long text;
}

as an example…

is it a problem with the database or is it a problem with the parameter passing function… please help as i am unable to figure this out…

thanx in advance.
Tariq