Check input in a html file from php

[build]

Hi all

i have a html file with code like

tr><td><strong>Image 1</strong></td>
<td><input type=file name=hi_upload1 size=40></td>
</tr>

<tr><td><strong>Description:</strong></td>
<td><input name=hi_upload1_txt size=40></td>
</tr>

etc down to ten of the above

Now what i want to do is have a php script make them upload five of the above

So if they only did one upload it would bring up a error saying you must upload five

As always, any and all help is greatly appreciated.

Thank you in advance.

John