php != code example

Example 1: what is php

Q: What is PHP?
  
A: PHP is a general-purpose scripting for the scripting of web developments.
It was originally produced in 1994 by Rasmus Lerdorf, a Danish Canadian
programmer. The PHP Group is now producing the PHP reference implementation.
PHP used to stand for Personal Home Page, now it stands for Hypertext
Preprocessor.
  
Implementation language: C (primarily; some components C++)
Stable release: 8.0.2 / 4 February 2021; 4 days ago
Developer: The PHP Development Team, Zend Technologies
Typing discipline: Dynamic, weak since version 7.0: Gradual
Designed by: Rasmus Lerdorf
Memory limit: 128 megabytes

Example 2: php ??

// Example usage for: Null Coalesce Operator
$action = $_POST['action'] ?? 'default';

// The above is identical to this if/else statement
if (isset($_POST['action'])) {
    $action = $_POST['action'];
} else {
    $action = 'default';
}

Example 3: php

<?php 
echo "Hello, World!"; 
?>

Example 4: ?? php

?: // !empty()
?? // isset()

Example 5: What is PHP

PHP is a server side scripting language. It is open source. It is embedded language.

Example 6:

<?php
echo "Hello world";

// ... more code

echo "Last statement";

// the script ends here with no PHP closing tag