//USAGE: $answer = numbercaptcha();
//****** Call this between <form></form>
//****** $_POST will contain $_POST['number']
//****** Check if $_POST['number'] is == to $answer
//OPERATORS: Add additional $opperators to the array for more varriation
function numbercaptcha() {
	//Set first and second num rand(min,max)
	$firstnum = rand(5,8);
	$secondnum = rand(1,4);
	$coinflip = rand(1,2) % 2; //Picks a random equation type
	if($coinflip == 0) {
		$math = $firstnum + $secondnum;
		$operators = array("+","Added To","Plus");
		$operatorschoice = rand(1,3) % 3;
	} else {
		$math = $firstnum - $secondnum;
		$operators = array("-","Minus");
		$operatorschoice = rand(1,2) % 2;
	}
	echo $firstnum . " " . $operators[$operatorschoice] . " " . $secondnum . " = <input type=\"text\" name=\"number\" maxlength=\"2\" size=\"5\">";
	return $math;
}