<?php
	$names=array("Fred", "Rob", "Lisa");
	if($_POST["submit"]){
		if($_POST["name"]){
			foreach($names as $name){
				if($_POST["name"]==$name){
					echo "I know you! Your name is ".$name;
					$knowYou=1;
				} 
			}
			if(!$knowYou){
				echo "I dont know you, ".$name;
			}
		} else {
			echo "Please enter your name";
		}
	}
?>