Double array in php and javascript issue

Question

I need to create an array in php and then to assign to java script function.I need something like this I need this array as same as it looks

$users = array(
array('username' => 'user1', 'email' => '[email protected]'),
array('username' => 'user2', 'email' => '[email protected]'),
array('username' => 'user3', 'email' => '[email protected]'),
...
);

For $users array i tried this code

 $users = array();
while($rw = $objApp->dbrow($res))
{
 $users []=array('username'=>$rw['username'],
      'email'=>$rw['email']
);
}

Is this OK?

If yes then i want to pass the same array to javascript function...here is what i tried

  objJS::importUsers( <?php echo json_encode($results) ?>);

This is simple,what is the issue in my code due to which it is not working

Answer 1

If you want to pass arbitrary object or array from PHP to Javascript, you may want to try JSON. (untested)

<?php
    $data = array('whatever');
    $json = json_encode($data);
?>

<script>
    var json = '<?=$json?>';
    var obj = JSON.parse(json);

    // do with your obj.
</script>

PHP json_encode

Javascript JSON.parse

Note that it only works if your object/array does not contain any key/values containing the ' character.

---

EDIT: It appears that you could have mixed up syntaxes.

Javascript has no :: operator.

I believe that

objJS::importUsers( <?php echo json_encode($results) ?>);

should actually be

objJS.importUsers( <?php echo json_encode($results) ?>);

However, as you don't tell us what objJs::importUsers is, we can just wild guessing. Is it a Javascript function, or a PHP class method, or something else?

If it is a PHP function, I wonder why you would need to pass it to Javascript - just call that method directly!

EDIT So I read the comment from other post here, you want to pass a PHP array to Javascript and appears as an Javascript array. Unfortunately they are not the same. Javascript array keys cannot really be strings (like 'email'), they are actually Javascript objects

Answer 2

<?php
    $result =['your entire array']
    echo json_encode($result);
?>

In your javascript!!!

var JS_ARRAY=[];
$.ajax({
            url: "../xyz/xyz.php",
            type: 'POST',
            data: {//your data to be send},
            dataType: "json",
            success: function(data) {
                     console.log(JSON.stringify(data)
                     JS_ARRAY.push(JSON.stringify(data));
}
});
//use this JS_ARRAY in you js function. 

Answer 3

    <?php
    $users = array(
        array('username' => 'user1', 'email' => '[email protected]'),
        array('username' => 'user2', 'email' => '[email protected]'),
        array('username' => 'user3', 'email' => '[email protected]'),
    );
    $users_json_str = json_encode($users);
    ?>
    <script type="text/javascript">
    // here is you java script
    // the variable users is the same with the $users in your php code
    var users = <?php echo "$users_json_str";?>;

    // you can access the first username
    var first_user_name = users[0]['username'];
    </script>