API - Fopen

I'm starting to produce a web application. I want to use:

$ url = 'http://finance.yahoo.com/d/quotes.csv?s=SLV&f=nab'; $ handle = @ fopen ($ url, 'r');

To recover the price of silver.

Esque is consistent with this policy yahoo. My application will be less than 1000 queries per day.

The website that I will be totally free product.

Hoping a precise answer.

thank you

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