pass php array to jquery function - php

Question

I got a page with a form to fill it with custormers info. I got previous custormers data stored in a php array. With a dropdownlist users can fill the form with my stored data.
what i have is a jquery function that triggers when the value changes and inside that function i whould like to update the form values with my stored data (in my php array).
Problem is that i dont know how to pass my php array to the jquery function, any idea ??
this is how i fill the array:
$contador_acompanantes = 0;
foreach ($acompanantes->Persona as $acomp)
{
$numero = $acomp->Numero;
$apellidos = $acomp->Apellidos;
$nombre = $acomp->Nombre;
$ACOMPANANTES[$contador_acompanantes] = $ficha_acomp;
$contador_acompanantes++;
}
got my select object:
<select name="acompanante_anterior" id="acompanante_anterior">
<option value="1" selected>Acompañante</option>
<option value="2">acompanante1</option>
<option value="2">acompanante2</option>
</select>
and this is my code for the jquery function (it is in the same .php page)
<script type="text/javascript">
$(document).ready(function()
{
$('#acompanante_anterior').on('change', function()
{
});
});
</script>

Answer 1

var arrayFromPHP = <?php echo json_encode($phpArray); ?>;
$.each(arrayFromPHP, function (i, elem) {
// do your stuff
});

Answer 2

You'll likely want to use json_encode, embed the JSON in the page, and parse it with JSON-js. Using this method, you should be aware of escaping </script>, quotes, and other entities. Also, standard security concerns apply. Demo here: http://jsfiddle.net/imsky/fjEgj/
HTML:
<select><option>---</option><option>Hello</option><option>World</option></select>
<script type="text/javascript">
var encoded_json_from_php = '{"Hello":[1,2,3], "World":[4,5,6]}';
var json = JSON.parse(encoded_json_from_php);
</script>
jQuery:
$(function() {
$("select").change(function() {
$(this).unbind("change");
var val = json[$(this).val()];
var select = $(this);
$(this).empty();
$.each(val, function(i, v) {
select.append("<option>" + v + "</option>");
});
});
});

Answer 3

try this one..
<script type="text/javascript">
$(document).ready(function()
{
$('#acompanante_anterior').on('change', function()
{
my_array = new Array();
<?php foreach($array as $key->val)?>
my_array['<?php echo $key?>'] = '<?php echo $val;?>';
<?php endif; ?>
});
});
</script>