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PHP programs

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• Content of a PHP script (program)
  • Content of a PHP program:

    ... text ... ... text ... <?php PHP code ?> ... text ... ... text ... <?php PHP code ?> ...

    Meaning of the PHP program:

    The text that is not enclosed inside the PHP tag <php .... ?>: Will be echoed verbatim !!!         The text that is enclosed inside a PHP tag <php .... ?>: Will be executed as PHP program statements !!!! Note: The PHP code need not be inside the same PHP tag!!!

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• The PHP tag
  • Syntax of the PHP Tag:

    <?PHP ... one or more PHP statements ... ?>

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  • The Hello World PHP program:

    <?php print("Hello World !\n"); ?>

    Output:

    Hello World ! How to run this demo: 1. On lab0z: ssh -X yourNetID@holland 2. On holland: php /home/cs377001/PHP/intro-PHP/hello.php