What best practices should PHP developers follow when using JavaScript for client-side interactions?

PHP developers should follow best practices such as separating concerns by keeping PHP code on the server-side and JavaScript code on the client-side. They should also sanitize user input to prevent security vulnerabilities and use proper error handling to maintain a smooth user experience. 

// Example of separating concerns by keeping PHP code on the server-side
<?php
// PHP code to fetch data from the database
$data = fetchDataFromDatabase();

// Passing the data to JavaScript for client-side interactions
echo "<script>var data = " . json_encode($data) . ";</script>";
?>

Keywords

PHP JavaScript client-side interactions AJAX error handling

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