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Editorial Team
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Asked: 2026-06-06T08:50:53+00:00

I have variable in the parent document eg. $var = ‘blah’; Then a div

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I have variable in the parent document eg. 

$var = 'blah';

Then a div is populated with a Jquery AJAX call and that file has the line.

<?php echo $var; ?>

At the moment I am getting

Notice: Undefined variable:

How can I resolve this.

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1 Answer

  1. Editorial Team

    Is your $var in the same php as the jQuery? You need to echo the $var from the php file that you initialized it in.

    For Example:

    A.php

    <!DOCTYPE html>
<html>
    <head>
        <script type="text/javascript" src="jquery.js"></script>
        <script type="text/javascript">
            $(document).ready(function() {
                $.ajax({
                    url : "B.php",
                    success : function(out) {
                        $('#out').html(out);
                    }
                });
            });
        </script>
    </head>
    <body>
        <div id="out">
        </div>
    </body>
</html>

    B.php

    <?php
  $var = "foo";
  echo $var;
?>
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