How does PHP interact with the server and client-side technologies like JavaScript in the context of variable manipulation and output?

PHP can interact with server-side technologies by processing data on the server before sending it to the client. It can also work with client-side technologies like JavaScript by outputting JavaScript code within PHP scripts. To manipulate variables and output them to the client, PHP can use functions like echo or print to send data to the browser. 

<?php
// Manipulating variables in PHP and outputting them to the client
$name = "John";
$age = 30;

echo "Hello, my name is " . $name . " and I am " . $age . " years old.";
?>

Keywords

PHP server-side client-side JavaScript variable manipulation output

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