I have a two dimensional javascript array that I want to assign to a php array.
I tried the following but it did not work:
var js_array= [[]];
js_array = <?php echo $result;?>;
I have basically created a two dimensional php array and assigned to a two dimensional javascript array.
I don't seem to see any logical issue in this code. Can someone please point out as to why this approach might not work?
Thanks.
You can't echo an array, only a string. Look at the json_encode function in PHP: https://www.php.net/json_encode you'll find this does what you want.
var js_thing = <?php echo json_encode($result);?>;
var js_array = <?php echo json_encode($a_lot_of_things); ?>; and it will work - strings, numbers, arrays, including mixed ones, and more, always properly encoded as data.var js_array= [];
js_array = <?php echo json_encode($result);?>;
Try json_encode
As others pointed out, json_encode is a good option. However, the object you receive in JS is not exactly an array. The answer to this question shows you pretty simple how to use it.
This should do it..
<script type="text/javascript">
<?php
$arr = array(
array(1,2,3,4,7),
array(5,3,6,8),
array(0,12,34,54,65)
);
$arr_str = '[';
foreach ($arr as $mv) {
$arr_str .= '[';
foreach ($mv as $sv) {
$arr_str .= $sv.',';
}
$l = strlen($arr_str);
if(substr($arr_str, -1) == ','){
$arr_str = substr($arr_str, 0, $l-1);
}
$arr_str .= '],';
}
$l = strlen($arr_str);
if(substr($arr_str, -1) == ','){
$arr_str = substr($arr_str, 0, $l-1);
}
$arr_str .= '];';
?>
var js_a =<?php echo $arr_str; ?>
Its the hard way.. and probably sucks.. ;)
$result? If it itself is the array, the code will bejs_array = Array;; if it's a string, how did you build it?