CODEWITHSUNDEEP
phpjavascript
Acubi
Acubi

Reputation: 2783

How do I assign a PHP array to a JS array?

Below is my code where the php array $keys assigned to a JS array var keysArr, But the value display on the alert box is not correct.

Thus, there is something wrong on assign Php array to Js array.

Can anyone help me? Thanks in advance!

<?php
$keys = array(1, 2, 3, 4);
?>
<html>
    <head>
    <script type="text/javascript">
        var keysArr = <?php print $keys?>;
        for (var i = 0; i < keysArr.length; ++i){

                    alert(keysArr[i]);

        }
    </script>
    </head>
    <body>
    </body>
</html>

Upvotes: 3

Views: 179

Answers (4)

UnMoscerinoNelWeb
UnMoscerinoNelWeb

Reputation: 39

<?php
$keys = array(1, 2, 3, 4);
?>
<html>
    <head>
    <script type="text/javascript">
        var keysArr = Array(<?php foreach($keys as $key) echo (is_numeric($key))? $key : '"'.$key.'"' ;?>);
        for (var i = 0; i < keysArr.length; ++i){

                    alert(keysArr[i]);

        }
    </script>
    </head>
    <body>
    </body>
</html>

Try this... I haven't tested it yet, but it would print numbers without quotes (") and other stuff with them.

Upvotes: 1

Kokers
Kokers

Reputation: 1828

Try this

<?php
$keys = array(1, 2, 3, 4);
?>
<html>
    <head>
    <script type="text/javascript">
        var keysArr = Array(<?php echo implode(',',$keys);?>);
        for (var i = 0; i < keysArr.length; ++i){

                    alert(keysArr[i]);

        }
    </script>
    </head>
    <body>
    </body>
</html>

whith print you're just showing Array, and not proper array code for js. Look inside the HTML you generate.

Upvotes: 0

fonini
fonini

Reputation: 3341

Try this, it doesn't need JSON extension:

var keysArr = [ <?php print implode(',', $keys); ?> ];
    for (var i = 0; i < keysArr.length; ++i){
        alert(keysArr[i]);
    }

Upvotes: 1

lanzz
lanzz

Reputation: 43168

var keysArr = <?php json_encode($keys) ?>;

requires PHP >= 5.2.0, but third-party json_encode() implementations are available for older versions.

Upvotes: 9

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