Using PHP parameter in Javascript -

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i have parameter of php of $test1, want add scenario in js if $test1 exists, show coding in javascript. have drafted code follow , doesn't work. may cause?

        <script type="text/javascript"><!--             mychart.setxmldata("             "<categories>" +                 "<category label='1'/>" +                 "<category label='2'/>" +             "</categories>" +             if($test1['transactions_tmp']) {             "<dataset>" +                 "<set value='147400'/>" +                 "<set value='189100'/>" +             "</dataset>" +             }             "</chart>");         // -->         </script>

try this:

<script type="text/javascript">             mychart.setxmldata(             "<categories>" +                 "<category label='1'/>" +                 "<category label='2'/>" +             "</categories>" +             "<?php if($test1['transactions_tmp']) { ?>" +             "<dataset>" +                 "<set value='147400'/>" +                 "<set value='189100'/>" +             "</dataset>" +             "<?php } ?>" +             "</chart>");  </script>

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