Save the value from Javascript to PHP

[KenFranklin]

I write code on Prestashop 1.6 module. In the admin click on the <div id="2" class="color-box"> with ID. Read ID value via jQuery. How to keep it in PHP variable ($a=2(id="2"))?

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$res .= '<script>$(".color-box").click(function() {var a = $(this).attr("id");'.Configuration::updateValue('a', 'this_is_value').'});</script>';

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How to pull var a and send it to the PHP 'this_is_valie'?

Thank you

Edited October 25, 2015 by workstyling (see edit history)