how to pass PHP array to javascript

[unpresedented]

I have a php array that consists of 4 string elements :
$arr = Array("A", "B", "C", "D");

i want to pass this array as an argument to a javascript function and alert the contents, how ? so i need something like this in javascript:

function x(my_arr) {
for(i=0;i<my_arr.length;i++)
  alert(my_arr[i]);
}

I do not want a solution like this : function ('<?=$arr?>') { ... }

whenever I try to pass it, the alert function of javascript displays the word "ARRAY" ...
thanx in advance ..

[Dormilich]

obviously. if you print out a PHP array, that’s what you get. you have to print it in such a way, that it defines the array in JavaScript.

$str = "[";
foreach ($arr as $val)
{
    $str += $val . ", ";
}
echo substr($str, 0, -1) . "];";

[unpresedented]

thank you so much for this cool idea ..
I appreciate it ...

[Dormilich]

that’s plain JavaScript printed by PHP, nothing special.

[xNephilimx]

you could also use json_encode function if you have php 5.2+

echo json_encode( $php_array );
 

The output will be the same as dormilich method.
Be aware that in javascript there are no associative arrays like in php (arrays with string keys instead of numbers), so json_encode will encode such array as an object.