php guide code example

Example 1: ?? php

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

Example 2: php

PHP is a general-purpose scripting language especially suited to
web development. 
It was originally created by Danish-Canadian programmer 
Rasmus Lerdorf in 1994; 
the PHP reference implementation is now produced by The PHP Group

Implementation language: C (primarily; some components C++)

Example 3: basic php

<?php
  
  // This is a comment
  
  echo 'Hello, World!';
  
  // And this outputs Hello, World!
  
?>

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