What is the best practice for passing a PHP variable to a JavaScript function?

When passing a PHP variable to a JavaScript function, the best practice is to echo the PHP variable value into a JavaScript variable within a script tag in your PHP file. This way, the JavaScript function can access the PHP variable's value seamlessly. 

<?php
$php_variable = "Hello, World!";

echo "<script>";
echo "var js_variable = '" . $php_variable . "';";
echo "</script>";
?>

Keywords

PHP JavaScript variable passing function best practice

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