我真的不知道我在做什麼錯。我想要統計查詢中的行。我的ID從1開始到...第1步,所以最大的數字是最後一個記錄。我只想讓腳本在de DB的最後一個記錄上運行。所以這是我的代碼。mysqli_num_rows()期望參數1是mysqli_result地理位置
public function saveLongLan()
{
define("MAPS_HOST", "maps.google.com");
define("KEY", "MYKEY");
$link = mysql_connect('localhost', 'root', 'root');
if (!$link) {
die('Not connected : ' . mysql_error());
}
// Set the active MySQL database
$db_selected = mysql_select_db('Foodsquare', $link);
if (!$db_selected)
{
die("Can\'t use db : " . mysql_error());
}
$query = "SELECT * FROM tblPlaces WHERE 1";
$result = mysql_query($query);
$row_cnt = mysqli_num_rows($result);
if (!$result)
{
die("Invalid query: " . mysql_error());
}
$delay = 0;
$base_url = "http://" . MAPS_HOST . "/maps/geo?output=xml" . "&key=" . KEY;
while ($row = @mysql_fetch_assoc($result))
{
$geocode_pending = true;
while ($geocode_pending)
{
$address = $row["Street"];
$id = $row["Id"];
$request_url = $base_url . "&q=" . urlencode($address);
$xml = simplexml_load_file($request_url) or die("url not loading");
$status = $xml->Response->Status->code;
if (strcmp($status, "200") == 0)
{
// Successful geocode
$geocode_pending = false;
$coordinates = $xml->Response->Placemark->Point->coordinates;
//explode functie breekt een string af vanaf een bepaald teken en stopt hem dan in een array
$coordinatesSplit = explode(',', $coordinates);
// formaat: Longitude, Latitude, Altitude
$lat = $coordinatesSplit[1];//getal = plaats in array
$lng = $coordinatesSplit[0];
$query = sprintf("UPDATE tblPlaces " .
" SET lat = '%s', lng = '%s' " .
" WHERE id = '". $row_cnt . "' LIMIT 1;",
mysql_real_escape_string($lat),
mysql_real_escape_string($lng),
mysql_real_escape_string($id));
$update_result = mysql_query($query);
if (!$update_result)
{
die("Invalid query: " . mysql_error());
}
} else if (strcmp($status, "620") == 0)
{
// sent geocodes too fast
$delay += 100000;
}
else
{
// failure to geocode
$geocode_pending = false;
echo "Address " . $address . " failed to geocoded. ";
echo "Received status " . $status . " \n";
}
usleep($delay);
}
}
}
我不這麼認爲,查詢我運行得很好,沒有rowcount,它的副本從谷歌api過去。謝謝 – Niels
因爲我忘記提及where子句的條件,所以我遇到了類似的問題。轉到本網站獲取關於where子句的教程:[where子句教程](http://www.tutorialspoint.com/mysql/mysql-where-clause.htm) – shivgre