JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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We don't offer the embed codes in PHP. I'm assuming you are looking for the actual source code of your form. You can find that by clicking PUBLISH at the top > EMBED > click the EMBED OPTIONS dropdown > select SOURCE CODE > then COPY CODE
Of course you're not limited to that, so I highly recommend you go over our quick guide on picking which embed code you should use based on your requirement [GUIDE: Which-form-embed-code-should-I-use]
Hope this helps. Let us know if you have further questions.