How to Access PHP Variables from an External JavaScript File?

How to Access PHP Variables from an External JavaScript File

PHP variables can be accessed from within inline JavaScript code using PHP echo tags (). However, this approach becomes impractical when working with external JavaScript files.

One way to overcome this limitation is to insert PHP variables into the JavaScript code at the time of serving the page:

<?php
    $color = "Red";
?>

<script type="text/javascript">
    var color = "<?php echo $color; ?>";
</script>

In the above example, the PHP variable $color is inserted into the JavaScript code as a string. This allows the external JavaScript file (file.js) to access the PHP variable:

// file.js

alert("color: " + color);

However, if your JavaScript code is not loaded from an external source, you can also use this approach:

<?php
    $color = "Red";
?>

In this case, the PHP variable is inserted directly into the JavaScript code and can be used within the same script.

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