Creating the Upload Script

Take a moment to commit the following list to memory—it contains the variables that are automatically placed in the $_FILES superglobal after a successful file upload. The base of img1 comes from the name of the input field in the original form.

$_FILES[$img1][tmp_name]. The value refers to the temporary file on the web server.
$_FILES[img1][name]. The value is the actual name of the file that was uploaded. For example, if the name of the file was me.jpg, the value of $_FILES[img1][name] is me.jpg.
$_FILES[img1][size]. The size of the uploaded file in bytes.
$_FILES[img1][type]. The MIME type of the uploaded file, such as image/jpg.

Note

A MIME type indicates the type of the content being transmitted. For instance, the MIME type of a JPEG file is image/jpg, and the MIME type of a Microsoft Word document is application/msword.

The goal of this script is to take the uploaded file, copy it to the document root of the web server, and return a confirmation to the user containing values for all the variables in the preceding list.

Open a new file in your text editor and start a PHP block:
```
<?
```
Create an if…else statement that checks for a value in $_FILES[img1]. if ($_FILES[img1] != "") {

If $_FILES[img1] is not empty, execute the copy function. Use @ before the function name to suppress warnings, and use the die() function to cause the script to end and a message to be displayed if the copy() function fails.

@copy($_FILES[img1][tmp_name],
"/usr/local/apache2/htdocs/".$_FILES[img1][name])
     or die("Couldn't copy the file.");

Note

If the document root of your web server is not /usr/local/apache2/htdocs/, as shown in step 3, change the path to match your own system. For example, a Windows user might use /Program Files/Apache Group/Apache/htdocs/.

Continue the else statement to handle the lack of a file for upload:
```
} else {
     die("No input file specified");
```
Close the if…else statement, and then close your PHP block:
```
}
?>
```

Add this HTML:

<HTML>
<HEAD>
<TITLE>Successful File Upload</TITLE>
</HEAD>
<BODY>
<H1>Success!</H1>

Mingle HTML and PHP, printing a line that displays values for the various elements of the uploaded file (name, size, and type):

<P>You sent: <? echo $_FILES[img1][name]; ?>,
a <? echo $_FILES[img1][size]; ?> byte file with
a mime type of <? echo $_FILES[img1][type]; ?>.</P>

Add some more HTML so that the document is valid:
```
</BODY>
</HTML>
```
Save the file with the name do_upload.php.

The code should look something like the following figure.

In the next section, you finally get to upload a file!