Introduction to PHP: Getting Started
PHP scripts are like HTML files, but instead of .htm or .html extension, they are given .php extension.
Within the file, PHP code is contained in <?php ?> tags.
Let's take a look at a very simple PHP script, that displays "Hello, World!" in the browser window.
I have put the following in a text-only file called example1.php, and uploaded the file to the server.
Example 1: "Hello, World!"
// Say Hello!
echo "Hello, World!";
See Example 1.
When we view the source of Example 1 in the browser, we notice the following.
- Because the page is rendered on the server before it hits the browser, the browser does not see the PHP code.
- The entire <?php ?> tag is replaced by the output of the code.
- Line 7, which begins with two slashes, is a comment.
- Every PHP statement ends with ;
Next: A Useful Example
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