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<?// get our db settings without loading all of wordpress every save$html = implode('', file("../../../wp-config.php"));$html = str_replace ("require_once", "// ", $html);$html = str_replace ("<?php", "", $html);$html = str_replace ("?>", "", $html);eval($html); if (isset($_POST["id"]) && isset($_POST["user"]) && is_numeric($_POST["user"]) && isset($_POST["content"]) && is_numeric($_POST["content"])) {$date = substr($_POST["id"], 7);$user_id = $_POST["user"];$weight = round($_POST["content"], 1);} else {print_r($_POST);echo "Please enter a valid number for your weight.";exit;} mysql_connect(DB_HOST, DB_USER, DB_PASSWORD);mysql_select_db(DB_NAME); $query = "update ".$table_prefix."hackdiet_weightlog set weight = $weight where wp_id = $user_id and date = \"".date("Y-m-d", $date)."\"";mysql_query($query);if (mysql_affected_rows() != 1) {// record doesn't exist yet,lets create it$query = "insert into ".$table_prefix."hackdiet_weightlog set date = \"".date("Y-m-d", $date)."\",weight = $weight,wp_id = $user_id";mysql_query($query);if (mysql_affected_rows() != 1) {echo "Save failed. - " . mysql_error();exit();} else {echo htmlspecialchars($weight);}} else {echo htmlspecialchars($weight);} $query = "select trend from ".$table_prefix."hackdiet_weightlog where wp_id = $user_id and date <\"".date("Y-m-d", $date)."\" order by date desc limit 1";$result = mysql_query($query);if (mysql_num_rows($result) == 1) {$trend = mysql_result($result, 0);$use_first_weight_as_trend = false;} else {// no trends exist below this entry,we must be first. so in next query,we need to grab today's weight to be trend 1$use_first_weight_as_trend = true;} $query = "select date,weight,trend from ".$table_prefix."hackdiet_weightlog where wp_id = $user_id and date >= \"".date("Y-m-d", $date)."\" order by date asc";$result = mysql_query($query);while ($entry = mysql_fetch_assoc($result)) {if ($use_first_weight_as_trend) {$trend = $entry["weight"];$use_first_weight_as_trend = false;} else {// exponentially smoothed moving average with 10% smoothing$trend = $trend + 0.1 * ($entry["weight"] - $trend);}$entry["trend"] = $trend;$weights[] = $entry;} foreach ($weights as $entry) {$query = "update ".$table_prefix."hackdiet_weightlog set trend = ".round($entry["trend"], 1)."where wp_id = $user_id and date = \"".$entry["date"]."\"";mysql_query($query);} // 0 will always be the edited date,since the list contains the edited entry + all the ones after it,sorted asc.$dif = round($weights[0]["weight"] - $weights[0]["trend"], 1); echo "<span class=\"trend_dif ".(($dif < 0)?"good_trend":"bad_trend")."\">$dif</span>";?>