Solved ProjectEuler/018: php, ruby

ProjectEuler/018/solve.php

@@ -0,0 +1,16 @@
+<?php
+foreach(file('php://stdin') as $line) {
+$tri[] = explode(' ',trim($line));
+}
+for($y=count($tri);$y>=0;$y--) {
+
+	for($x=0;$x<count($tri[$y]);$x++) {
+	$cur = $tri[$y][$x];
+		if($cur + $tri[$y+1][$x] > $cur + $tri[$y+1][$x+1]) {
+			$tri[$y][$x] =  $cur + $tri[$y+1][$x];
+		} else {
+			$tri[$y][$x] = $cur + $tri[$y+1][$x+1];
+		}
+	}
+}
+echo $tri[0][0];