The <?php ?> Tag. Free online PHP and MySQL Web Database Programming Tutorial...

In the previous lesson, we learned that PHP scripts are always enclosed in between two PHP tags and we learned to use the basic <?php ?> tag. PHP provides us three different forms of php scripting tags, as explained below:

1. <?php
echo "First style";
?>

2. <script language="php">
echo "Second Sytle";
</script>

3. <?
echo "Third Style";
?>

In this tutorial we will prefer the usage of the first style i.e. <? php ?>.

Comments in PHP
Just like other programming languages and HTML, PHP too supports comments in code. It may be noted that PHP supports C++ style of comments. Two types of comments are available in PHP:

1. Single Line Comments
Single line comments can be added as under:

<html>
   <body>
      <?php
         // This is an example of single line comments
     ?>
   </body>
</html>

2. Multi-Line Comments
Multi-line comments can be added as under:

<html>
   <body>
      <?php
         /* This is an example 
         of multi-line comments.
         */	
     ?>
   </body>
</html>

Next: First PHP Program