Solved ProjectEuler/039,041,042

ProjectEuler/042/solve.php

@@ -0,0 +1,18 @@
+<?php
+$words = explode('","',substr(file_get_contents('php://STDIN'),1,-1));
+
+//Find triangles
+for($t=1;$t<40;$t++) {
+	$triangle_numbers[] = 0.5*$t*($t+1);
+}
+
+foreach($words as $word) {
+	for($c =0; $c < strlen($word); $c++) {
+		$char_sum += ord($word[$c]) - 64;	
+	}
+	if(in_array($char_sum,$triangle_numbers)) {
+		$result++;
+	}
+	$char_sum = 0;
+}
+echo $result;