How Do I Import From A PHP Array In A Javascriptarray

I cannot figure out how to import an array from PHP into Javascript MyPHPcode is like this

<?php
$i=0;
While ($i < $num) {
$PHPvar= (" $PHPvar " $Mystring[$i] " , ");
$i++;}?>

The ouput of $Mystring is: "string1","string2","etc"," " (the
last empty string is added later on in the function:

This is exactly what Javascript expects in an array, however I get no
output in Javascript this way. transfering data:

<INPUT TYPE= "hidden" ID= "PHP2JS" VALUE="<?php echo( $c);?> ">

javascript:

<script type="text/javascript">

var text=PHP2JS.value;
document.write(text);

myarray = new Array(text);

for etc.
</script>

When I replace the " with nothing (in the PHP part) it works in
the - document write(text) - and all data is loaded into
myarray(0) but I need the " " . does someone have a better idea?