What are the differences between server-side PHP and client-side JavaScript in terms of executing commands?

Server-side PHP executes on the server before the page is sent to the client, while client-side JavaScript executes on the client's browser after the page is received. This means that PHP commands are executed on the server, while JavaScript commands are executed on the client's machine. 

<?php
// Server-side PHP code
$variable = "Hello, World!";
echo $variable;
?>

Keywords

server-side PHP client-side JavaScript executing commands

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