added example "upload" PHP script to accept travis uploads.

support/buildserver/upload.php

@@ -0,0 +1,39 @@
+<?
+	// see docs/Travis.md, .travis.sh
+
+	$myFile = $_FILES["file"];
+	$recentCommits = $_POST["recent_commits"];
+	$travisJobId = $_POST["travis_build_number"];
+	$lastCommitDate = sanitize($_POST["last_commit_date"]);
+	$revision = sanitize($_POST["revision"]);
+	$branch = sanitize($_POST["branch"]);
+	$baseDir = "/var/www/builds/";
+	$uploadDir = $baseDir."/".$lastCommitDate."/";
+	$prefix = $uploadDir.$travisJobId."_".$revision;
+
+	if (!file_exists($uploadDir)) mkdir($uploadDir,0770,true);
+
+	if ($myFile){
+		$uploadfile = $prefix."_".(basename($myFile['name']));
+		if (move_uploaded_file($myFile['tmp_name'], $uploadfile)) {
+				echo "upload succeeded.\n";
+		} else {
+				echo "upload failed $uploadfile\n";
+		}
+	}
+
+	if ($revision && $lastCommitDate && $recentCommits){
+			$changelog = fopen($prefix."_changes.txt","w") or die ("unable to open changelog file for writing");
+			fwrite($changelog, $recentCommits);
+			fclose($changelog);
+	}
+	
+	print_r($_FILES);
+	print_r($_POST);
+	print_r($_GET);
+
+	function sanitize($str) {
+		return  (preg_replace('/[^A-Za-z0-9_\-]/', '_', ($str)));
+	}
+
+?>