Im not sure you get what i mean, you have a html page, say login.htm and that contains your form:

<form action="handlefile.php">
<input type="text" id="username">
</input>
<input type="submit" id="password">
</input>
</form>

then you have that other file handlefile.php, you see in the above when the button is clicked it will then carry out what is in the php file.

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