<script> document.cookie = "myJavascriptVar = " + myJavascriptVar </script>

<?php

     $myPhpVar= $_COOKIE['myJavascriptVar'];

?>

<script type="text/javascript">

var abc= 'this is text';

<?php $abc = "<script>document.write(abc)</script>"?>   

</script>

<?php echo $abc;?>

<script type="text/javascript">

var jvalue = 'this is javascript value';

​

<?php $abc = "<script>document.write(jvalue)</script>"?>   

</script>

<?php echo  'php_'.$abc;?>

<script>

if (data) {

    var a =data;

    <?php $abc = "<script>document.write(a)</script>"?>   

}

if (!data) {

    console.log('no data');

}

</script>

<?php

   echo $abc;

?>