How can PHP constants be accessed in JavaScript code in a web application?

PHP constants cannot be directly accessed in JavaScript code since they are processed on the server-side before the page is rendered. To use PHP constants in JavaScript, you can output them as JavaScript variables within script tags in your HTML file. This way, the JavaScript code can access the values of the PHP constants. 

<?php
define('MY_CONSTANT', 'Hello from PHP!');
?>

<script>
var myConstant = '<?php echo MY_CONSTANT; ?>';
console.log(myConstant); // Output: Hello from PHP!
</script>

Keywords

PHP constants JavaScript code web application access integration

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