socotroco (./4) :
but maybe the trouble is that i have many variables do you have any document to verify how you made the consults???

not sure to understand this sentence...

and what variables are you considering?
if it's PHP variables, then I don't think PHP has a serious limitation with this, but we never know...

I think that you don't give enough technical information at all for us to be of any help.

Please give numbers, post code examples, etc.