Sports Points r/dailyprogrammer

gistfile1.php

<?php

if ($argc <= 1)
	exit("No score was passed\n");
$inputScore = (integer) $argv[1];
$x = 0;
$validScores = array($x);
print "Input score: $inputScore\n";
while ($x <= $inputScore) { // Do until last valid score is higher than input score
	$array = $validScores;
	foreach ($array as $score) { // For each of the valid scores
		isScoreValid($score, 3, $inputScore, $validScores); // Field goal
		isScoreValid($score, 6, $inputScore, $validScores); // Touchdown
		isScoreValid($score, 7, $inputScore, $validScores); // Touchdown + Conversion
		$x = isScoreValid($score, 8, $inputScore, $validScores); // Touchdown + Two-point Conversion
	}
}
exit("Score is invalid\n"); // If input score not found yet, must be invalid
function isScoreValid($score, $points, $target, &$validScores) {
	$x = $score + $points;
	if (in_array($x, $validScores)) { // Check if this valid score already exists
		/*print "Duplicate score: $x ($score + $points)\n";*/
		return $x;
	}
	$validScores[] = $x; // If new valid score, add to array
	print "Potential score: $x ($score + $points)\n";
	if ($x == $target) { // Check if valid score is the input score
		exit("Score is valid\n");
	}
	return $x;
}