Reply To: hw to add data from html table(rendered from a page) to mysql database using php

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First and foremost, make sure you have permission to do so.

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4. The license to access and use the information on our website does not include the right to use any data mining robots or other extraction tools. The license also does not permit you to metatag or mirror our website without our prior written permission. We reserve the right to serve you with notice if we become aware of your metatag or mirroring of our website.
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“Just because” information is available on the internet does not mean that it is legal or ethical to use it for your own purposes.

Further, in many cases, if you are allowed to use such information, there will be a published API that makes it easier to access. You should definitely look into this possibility.