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When you embed PHP code with HTML, you need to have the opening tag <?php and closing tag ?>. However, if the file contains only PHP code, you don’t need to the closing tag ?> like the index.php above.
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Now that you have successfully created a working PHP script, it is time to create the most famous PHP script! Make a call to the phpinfo() function and you will see a lot of useful information about your system and setup such as available predefined variables , loaded PHP modules, and configuration settings.
You will have to choose the PHP extension (.php) when you want php code to be executed in the file. PHP code is code between the opening <?php or <? and the closing ?> tags. When no PHP code should be executed you can use the .html extension.
Learn PHP. PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now »
Let’s go! Here's what we'll cover in this handbook: Introduction to PHP. What Kind of Language is PHP? How to Setup PHP. How to Code Your First PHP Program. PHP Language Basics. How to Work with Strings in PHP. How to Use Built-in Functions for Numbers in PHP. How Arrays Work in PHP. How Conditionals Work in PHP. How Loops Work in PHP.
index.php is just like foobar.php or any other PHP script, except it's typically loaded as the default page, like index.html. Your index.php can be <?php echo 'Hello World!'; or anything else you care to do with PHP. It can also be <?php $_GET['page'] ??= 'default'; if($_GET['page'] == 'hello') { echo "<b>Hello</b>"; } elseif ($_GET['page ...