JSON - PHP Details information

[bharaniku...@gmail.com]

Hi all ,

Am very new to this group ,

I am bharanikumar , working for uk based company , doing travel
related portal , very much interested in all new technology ,

For my few problems , in my site performance , i like to change few
thing like loading the values into drop down and

auto suggest these thing need to implement using json-php-ajax ,

So please tell me ,

How much safe is json , what u thing about in the performance view
and how it is very much convenient for developer and user ,

Is there any browser compatability problem there ?

Please tell your all suggestion and all ,

Expecting lot of reply's

Thanks
Bharanikumar