PHP Functions Ex. #1: Simple Function

Functions in PHP can help automate repetitive tasks and enable you to reuse code with a simple function call. For your first function, we'll keep it really simple.

For this PHP exercise, create a function called "hello" that outputs that phrase we all know and love, "Hello, World!" to the browser. Call the function.

Here's the code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

     "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

```
 
```

<html xmlns="http://www.w3.org/1999/xhtml"  xml:lang="en" lang="en">

```
<head>
```

<meta http-equiv="content-type" content="text/html;charset=iso-8859-1" />

```
<title>Hello Function</title>
```
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</head>
```
```
 
```
```
<body>
```
```
<h2>Hello Function</h2>
```
```
 
```
```
<?php
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```
//Define function.
```
```
function hello(){
```
```
  echo "Hello, World!";
```
```
}
```
```
 
```
```
//Call function.
```
```
hello();
```
```
?>
```
```
 
```
```
</body>
```
```
</html>
```

See the output of the script in a separate window here. You can also view the output's HTML source from the new window, if you need to check that.

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PHP Functions Ex. #1: Simple Function