1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 | <?php /* * Copyright 2010,2011 Alexander Sadleir Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ function getTrip($tripID) { global $conn; $query = "Select * from trips join routes on trips.route_id = routes.route_id where trip_id = :tripID LIMIT 1"; debug($query, "database"); $query = $conn->prepare($query); $query->bindParam(":tripID", $tripID); $query->execute(); if (!$query) { databaseError($conn->errorInfo()); return Array(); } return $query->fetch(PDO :: FETCH_ASSOC); } function getTripShape($tripID) { // todo, use shapes table if shape_id specified global $conn; $query = "SELECT ST_AsKML(ST_MakeLine(geometry(a.position))) as the_route FROM (SELECT position, stop_sequence, trips.trip_id FROM stop_times join trips on trips.trip_id = stop_times.trip_id join stops on stops.stop_id = stop_times.stop_id WHERE trips.trip_id = :tripID ORDER BY stop_sequence) as a group by a.trip_id"; debug($query, "database"); $query = $conn->prepare($query); $query->bindParam(":tripID", $tripID); $query->execute(); if (!$query) { databaseError($conn->errorInfo()); return Array(); } return $query->fetchColumn(0); } function getTripStopTimes($tripID) { global $conn; $query = "SELECT stop_times.trip_id,arrival_time,stop_times.stop_id,stop_lat,stop_lon,stop_name,stop_code, stop_sequence,service_id,trips.route_id,route_short_name,route_long_name FROM stop_times join trips on trips.trip_id = stop_times.trip_id join routes on trips.route_id = routes.route_id join stops on stops.stop_id = stop_times.stop_id WHERE trips.trip_id = :tripID $range ORDER BY stop_sequence"; debug($query, "database"); $query = $conn->prepare($query); $query->bindParam(":tripID", $tripID); $query->execute(); if (!$query) { databaseError($conn->errorInfo()); return Array(); } $stopTimes = $query->fetchAll(); return $stopTimes; } function getTripAtStop($tripID, $stop_sequence) { global $conn; foreach (getTripStopTimes($tripID) as $tripStop) { if ($tripStop['stop_sequence'] == $stop_sequence) return $tripStop; } return Array(); } /* DEPRECIATED function getTimeInterpolatedTrip($tripID, $range = "") { global $conn; $query = "SELECT stop_times.trip_id,arrival_time,stop_times.stop_id,stop_lat,stop_lon,stop_name,stop_code, stop_sequence,service_id,trips.route_id,route_short_name,route_long_name FROM stop_times join trips on trips.trip_id = stop_times.trip_id join routes on trips.route_id = routes.route_id join stops on stops.stop_id = stop_times.stop_id WHERE trips.trip_id = :tripID $range ORDER BY stop_sequence"; debug($query, "database"); $query = $conn->prepare($query); $query->bindParam(":tripID", $tripID); $query->execute(); if (!$query) { databaseError($conn->errorInfo()); return Array(); } $stopTimes = $query->fetchAll(); $cur_timepoint = Array(); $next_timepoint = Array(); $distance_between_timepoints = 0.0; $distance_traveled_between_timepoints = 0.0; $rv = Array(); foreach ($stopTimes as $i => $stopTime) { if ($stopTime['arrival_time'] != "") { // is timepoint $cur_timepoint = $stopTime; $distance_between_timepoints = 0.0; $distance_traveled_between_timepoints = 0.0; if ($i + 1 < sizeof($stopTimes)) { $k = $i + 1; $distance_between_timepoints += distance($stopTimes[$k - 1]["stop_lat"], $stopTimes[$k - 1]["stop_lon"], $stopTimes[$k]["stop_lat"], $stopTimes[$k]["stop_lon"]); while ($stopTimes[$k]["arrival_time"] == "" && $k + 1 < sizeof($stopTimes)) { $k += 1; // echo "k".$k; $distance_between_timepoints += distance($stopTimes[$k - 1]["stop_lat"], $stopTimes[$k - 1]["stop_lon"], $stopTimes[$k]["stop_lat"], $stopTimes[$k]["stop_lon"]); } $next_timepoint = $stopTimes[$k]; } $rv[] = $stopTime; } else { // is untimed point // echo "i".$i; $distance_traveled_between_timepoints += distance($stopTimes[$i - 1]["stop_lat"], $stopTimes[$i - 1]["stop_lon"], $stopTimes[$i]["stop_lat"], $stopTimes[$i]["stop_lon"]); // echo "$distance_traveled_between_timepoints / $distance_between_timepoints<br>"; $distance_percent = $distance_traveled_between_timepoints / $distance_between_timepoints; if ($next_timepoint["arrival_time"] != "") { $total_time = strtotime($next_timepoint["arrival_time"]) - strtotime($cur_timepoint["arrival_time"]); // echo strtotime($next_timepoint["arrival_time"])." - ".strtotime($cur_timepoint["arrival_time"])."<br>"; $time_estimate = ($distance_percent * $total_time) + strtotime($cur_timepoint["arrival_time"]); $stopTime["arrival_time"] = date("H:i:s", $time_estimate); } else { $stopTime["arrival_time"] = $cur_timepoint["arrival_time"]; } $rv[] = $stopTime; } } // var_dump($rv); return $rv; } function getTripPreviousTimePoint($tripID, $stop_sequence) { global $conn; $query = " SELECT trip_id,stop_id, stop_sequence FROM stop_times WHERE trip_id = :tripID and stop_sequence < :stop_sequence and stop_times.arrival_time IS NOT NULL ORDER BY stop_sequence DESC LIMIT 1"; debug($query, "database"); $query = $conn->prepare($query); $query->bindParam(":tripID", $tripID); $query->bindParam(":stop_sequence", $stop_sequence); $query->execute(); if (!$query) { databaseError($conn->errorInfo()); return Array(); } return $query->fetch(PDO :: FETCH_ASSOC); } function getTripNextTimePoint($tripID, $stop_sequence) { global $conn; $query = " SELECT trip_id,stop_id, stop_sequence FROM stop_times WHERE trip_id = :tripID and stop_sequence > :stop_sequence and stop_times.arrival_time IS NOT NULL ORDER BY stop_sequence LIMIT 1"; debug($query, "database"); $query = $conn->prepare($query); $query->bindParam(":tripID", $tripID); $query->bindParam(":stop_sequence", $stop_sequence); $query->execute(); if (!$query) { databaseError($conn->errorInfo()); return Array(); } return $query->fetch(PDO :: FETCH_ASSOC); } function getTimeInterpolatedTripAtStop($tripID, $stop_sequence) { global $conn; // limit interpolation to between nearest actual points. $prevTimePoint = getTripPreviousTimePoint($tripID, $stop_sequence); $nextTimePoint = getTripNextTimePoint($tripID, $stop_sequence); // echo " prev {$lowestDelta['stop_sequence']} next {$nextTimePoint['stop_sequence']} "; $range = ""; if ($prevTimePoint != "") $range .= " AND stop_sequence >= '{$prevTimePoint['stop_sequence']}'"; if ($nextTimePoint != "") $range .= " AND stop_sequence <= '{$nextTimePoint['stop_sequence']}'"; foreach (getTimeInterpolatedTrip($tripID, $range) as $tripStop) { if ($tripStop['stop_sequence'] == $stop_sequence) return $tripStop; } return Array(); }*/ function getTripStartTime($tripID) { global $conn; $query = "Select * from stop_times where trip_id = :tripID AND arrival_time IS NOT NULL AND stop_sequence = '1'"; debug($query, "database"); $query = $conn->prepare($query); $query->bindParam(":tripID", $tripID); $query->execute(); if (!$query) { databaseError($conn->errorInfo()); return Array(); } $r = $query->fetch(PDO :: FETCH_ASSOC); return $r['arrival_time']; } function getTripEndTime($tripID) { global $conn; $query = "SELECT trip_id,max(arrival_time) as arrival_time from stop_times WHERE stop_times.arrival_time IS NOT NULL and trip_id = :tripID group by trip_id"; debug($query, "database"); $query = $conn->prepare($query); $query->bindParam(":tripID", $tripID); $query->execute(); if (!$query) { databaseError($conn->errorInfo()); return Array(); } $r = $query->fetch(PDO :: FETCH_ASSOC); return $r['arrival_time']; } function getActiveTrips($time) { global $conn; if ($time == "") $time = current_time(); $query = "Select distinct stop_times.trip_id, start_times.arrival_time as start_time, end_times.arrival_time as end_time from stop_times, (SELECT trip_id,arrival_time from stop_times WHERE stop_times.arrival_time IS NOT NULL AND stop_sequence = '1') as start_times, (SELECT trip_id,max(arrival_time) as arrival_time from stop_times WHERE stop_times.arrival_time IS NOT NULL group by trip_id) as end_times WHERE start_times.trip_id = end_times.trip_id AND stop_times.trip_id = end_times.trip_id AND :time > start_times.arrival_time AND :time < end_times.arrival_time"; debug($query, "database"); $query = $conn->prepare($query); $query->bindParam(":time", $time); $query->execute(); if (!$query) { databaseError($conn->errorInfo()); return Array(); } return $query->fetchAll(); } function viaPoints($tripID, $stop_sequence = "", $timing_points_only = true) { global $conn; $query = "SELECT stops.stop_id, stop_name, arrival_time FROM stop_times join stops on stops.stop_id = stop_times.stop_id WHERE stop_times.trip_id = :tripID " . ($stop_sequence != "" ? " AND stop_sequence > :stop_sequence " : "") . ($timing_points_only ? "AND substr(stop_code,1,2) != 'Wj' " : "") . " ORDER BY stop_sequence"; debug($query, "database"); $query = $conn->prepare($query); if ($stop_sequence != "") $query->bindParam(":stop_sequence", $stop_sequence); $query->bindParam(":tripID", $tripID); $query->execute(); if (!$query) { databaseError($conn->errorInfo()); return Array(); } return $query->fetchAll(); } function viaPointNames($tripid, $stop_sequence = "") { $viaPointNames = Array(); foreach (viaPoints($tripid, $stop_sequence) as $point) { $viaPointNames[] = $point['stop_name']; } if (sizeof($viaPointNames) > 0) { return r_implode(", ", $viaPointNames); } else { return ""; } } ?> |