Passing array data from php to javascript using a loop

Question

Is there a similar way to implement this kind of "algorithm" in the right way?

for(i=0;i<howManyCourses;i++){

            var stored = "<?php echo $buf[i] ?>";
            var option = document.createElement("option");
            option.text=stored;
            e.add(option);

        }

So I want to pass the data from the $buf array into a javascript variable. I've tried many ways but it seems like I cannot find the solution. I'm new into php and I apologise for any obvious mistake.

Possible duplicate of How to pass variables and data from PHP to JavaScript? — ficuscr
– ficuscr, Commented Jun 7, 2019 at 18:49

Aziz.G · Accepted Answer · 2019-06-07 19:03:49Z

1

It should be in the same file or in another case AJAX will be the solution.

<script type="text/javascript">

       const arr = <?php echo json_encode($buf); ?>;

       for (var i = 0; i < arr.length ; i++) {
           //do something
       }

 </script>

edited Jun 7, 2019 at 19:03

answered Jun 7, 2019 at 18:49

Aziz.G

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Comments

Eduardo Escobar · Accepted Answer · 2019-06-07 18:53:41Z

0

If you need that JS' variable buf contain the same elements as PHP's $buf, you can do the following:

var buf = <?php echo json_encode($buf); ?>;

Just keep in mind that if PHP's $buf is not an indexed array, JS' buf will be an object instead of an array.

answered Jun 7, 2019 at 18:53

Eduardo Escobar

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