input the data longer than the field length from ibconsole and from the web page

[searain]

I tried it out. Here is what I get,

I have a filed with varchar(100).

1) If I tried to input data 105 charaters long through IBConsole. I got the
error message and I could not insert that data.

2) But if I tried to input the same data 105 characters long through a web
page (PHP programming), I got the error warning, and my php programming
page hung on there for a while (maybe some dead thread created), but the
data was input to my interbase database anyway with all these error or stuck.
It seemed the php interbase statement forced the Interbase server to accept
the record.

Could some one explain to me why?

Thanks!