PHP - MDN Web Docs Glossary: Definitions of Web-related terms 编辑

PHP (a recursive initialism for PHP: Hypertext Preprocessor) is an open-source server-side scripting language that can be embedded into HTML to build web applications and dynamic websites.

Examples

Basic syntax

  // start of PHP code
<?php
     // PHP code goes here
 ?>
// end of PHP code

Printing data on screen

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

PHP variables

<?php
 // variables
 $nome='Danilo';
 $sobrenome='Santos';
 $pais='Brasil';
 $email='danilocarsan@gmailcom';

 // printing the variables
 echo $nome;
 echo $sobrenome;
 echo $pais;
 echo $email;
?>