<!DOCTYPE html>
<html>
<body>
<h1>My first PHP page</h1>
<?php //these tags denote PHP code - open
show_source(__FILE__);
//variables in php are preceded with a $ symbol
//loosely typed language so variables are declared
//when used and type allocated at that point
$message = "Hello World!";
//php echo command used to write to browser
//variables in "" are replaced with current value
//Very useful in constructing HTML output strings
echo "<p>$message</p>";
//single quotes do not expand variable, but you can
//concatenate strings and variables using the . operator
echo '<p style="color:steelblue;">' . $message . ' in SteelBlue</p>';
//these tags denote PHP code - close ?>
<p>Right click/view source or F12 to see the actual HTML generated</p>
</body>
</html>
Hello World!
Hello World! in SteelBlue
Right click/view source or F12 to see the actual HTML generated