Port DB import to PDO to use prepared statements for maximum performance
[busui.git] / updatedb.php
blob:a/updatedb.php -> blob:b/updatedb.php
<?php <?php
include('include/common-db.inc.php'); include ('include/common.inc.php');
  //$conn = pg_connect("dbname=transitdata user=postgres password=snmc host=localhost") or die('connection failed');
// Unzip cbrfeed.zip, import all csv files to database // Unzip cbrfeed.zip, import all csv files to database
$unzip = true; $unzip = false;
$zip = zip_open(dirname(__FILE__) . "/cbrfeed.zip"); $zip = zip_open(dirname(__FILE__) . "/cbrfeed.zip");
$tmpdir = "/tmp/cbrfeed/"; $tmpdir = "/tmp/cbrfeed/";
mkdir($tmpdir); mkdir($tmpdir);
if ($unzip) { if ($unzip) {
if (is_resource($zip)) { if (is_resource($zip)) {
while ($zip_entry = zip_read($zip)) { while ($zip_entry = zip_read($zip)) {
$fp = fopen($tmpdir . zip_entry_name($zip_entry) , "w"); $fp = fopen($tmpdir . zip_entry_name($zip_entry) , "w");
if (zip_entry_open($zip, $zip_entry, "r")) { if (zip_entry_open($zip, $zip_entry, "r")) {
echo "Extracting " . zip_entry_name($zip_entry) . "\n"; echo "Extracting " . zip_entry_name($zip_entry) . "\n";
$buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry)); $buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
fwrite($fp, "$buf"); fwrite($fp, "$buf");
zip_entry_close($zip_entry); zip_entry_close($zip_entry);
fclose($fp); fclose($fp);
  }
} }
  zip_close($zip);
} }
zip_close($zip);  
} }
}  
   
foreach (scandir($tmpdir) as $file) { foreach (scandir($tmpdir) as $file) {
if (!strpos($file, ".txt") === false) { if (!strpos($file, ".txt") === false) {
$fieldseparator = ","; $fieldseparator = ",";
$lineseparator = "\n"; $lineseparator = "\n";
$tablename = str_replace(".txt", "", $file); $tablename = str_replace(".txt", "", $file);
echo "Opening $file \n"; echo "Opening $tmpdir . $file \n";
$line = 0; $line = 0;
$handle = fopen($tmpdir . $file, "r"); $handle = fopen($tmpdir . $file, "r");
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) { $stmt = null;
if ($line > 0) { $stmt_noarrival = $conn->prepare("insert into stop_times (trip_id,stop_id,stop_sequence) values(? ? ?);");
  while (($columns = fgetcsv($handle, 1000, ",")) !== FALSE) {
  if ($line == 0) {
$query = "insert into $tablename values("; $query = "insert into $tablename values(";
$valueCount = 0; $valueCount = 0;
foreach ($data as $value) { foreach ($columns as $value) {
$query.=($valueCount >0 ? "','" :"'").pg_escape_string($value); $query.= ($valueCount >0 ? "," :"")." ? ";
$valueCount++; $valueCount++;
} }
if ($tablename == "stops") { if ($tablename == "stops") {
$query.= "', ST_GeographyFromText('SRID=4326;POINT({$data[2]} {$data[0]})'));"; $query.= ", ST_GeographyFromText('SRID=4326;POINT(? ?)'));";
} else { }
$query.= "');"; else {
} $query.= ");";
if ($tablename =="stop_times" && $data[1] == "") { }
$query = "insert into $tablename (trip_id,stop_id,stop_sequence) values('{$data[0]}','{$data[3]}','{$data[4]}');"; $stmt = $conn->prepare($query);
}  
   
} }
$result = pg_query($conn, $query); else {
  $data = $columns;
  if ($tablename == "stops") {
  $data[] = $data[2];
  $data[] = $data[0];
  }
  if ($tablename == "stop_times" && $data[1] == "") {
  $stmt_noarrival->execute(Array(
  $data[0],
  $data[3],
  $data[4]
  ));
  }
  else {
  $stmt->execute($data);
  }
  }
$line++; $line++;
if ($line % 10000 == 0) echo "$line records... \n"; if ($line % 10000 == 0) echo "$line records... \n";
} }
fclose($handle); fclose($handle);
echo "Found a total of $line records in $file.\n"; echo "Found a total of $line records in $file.\n";
   
} }
} }
?> ?>