Question

我在从MySQL生成xml时出现问题，该问题似乎与邮件标题标题相关（＆＃34;内容类型：text / xml＆＃34;）; {{3} }指的是这个问题，但在我的情况下并没有解决问题。该帖子引用了2007 GMap示例，而不是This link

以下是完整的代码......

$center_lat = $_GET["lat"];
$center_lng = $_GET["lng"];
$radius = $_GET["radius"];
// Start XML file, create parent node
$dom = new DOMDocument("1.0");
$node = $dom->createElement("markers");
$parnode = $dom->appendChild($node);

// Opens a connection to a mySQL server
$connection=mysql_connect ("99.99.99", "abcdefg", "zzzzzz");
if (!$connection) {
  die("Not connected : " . mysql_error());
}

// Set the active mySQL database
$db_selected = mysql_select_db("xxxxxxx", $connection);
if (!$db_selected) {
  die ("Can\'t use db : " . mysql_error());
}

// Search the rows in the markers table
$query = sprintf("SELECT address, name, lat, lng, ( 3959 * acos( cos( radians('%s') ) * cos( radians( lat ) ) * cos( radians( lng ) - radians('%s') ) + sin( radians('%s') ) * sin( radians( lat ) ) ) ) AS distance FROM markers ",
  mysql_real_escape_string($center_lat),
  mysql_real_escape_string($center_lng),
  mysql_real_escape_string($center_lat),
  mysql_real_escape_string($radius));
$result = mysql_query($query);

if (!$result) {
  die("Invalid query: " . mysql_error());
} 
// - !!!! This is the problem line !!!!!
//header("Content-type: text/xml");

// Iterate through the rows, adding XML nodes for each
$i = 1;
while ($row = mysql_fetch_assoc($result)){
  echo $i.$row['name']."<br>";  // names correctly displayed
  $node = $dom->createElement("marker");
  $newnode = $parnode->appendChild($node);
  $newnode->setAttribute("name", $row['name']);
  $newnode->setAttribute("address", $row['address']);
  $newnode->setAttribute("lat", $row['lat']);
  $newnode->setAttribute("lng", $row['lng']);
  $newnode->setAttribute("distance", $row['distance']);
  $i = $i + 1;
}

echo $dom->saveXML();
echo "done ".$i;  // Script ends ok $i = 16

一切看起来都像echo语句所示 - 但是，由于没有消息标题行，所以没有xml回显到屏幕。

我做错了什么？

Answer 1

答案似乎是不要忽略对弃用代码的警告 - 即使用mysqli_而不是mysql_！这就是我怀疑xml被认为格式错误的原因。

以下是不会出错的代码..

$con=mysqli_connect("servername","user","pwd","database");
// Check connection
if (mysqli_connect_errno())
  {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  }

// Get parameters from URL
$center_lat = $_GET["lat"];
$center_lng = $_GET["lng"];
$radius = $_GET["radius"];

// Start XML file, create parent node
$dom = new DOMDocument("1.0");
$node = $dom->createElement("markers");
$parnode = $dom->appendChild($node);

// Search the rows in the markers table
$query = sprintf("SELECT address, name, lat, lng, ( 3959 * acos( cos( radians('%s') ) * cos( radians( lat ) ) * cos( radians( lng ) - radians('%s') ) + sin( radians('%s') ) * sin( radians( lat ) ) ) ) AS distance FROM markers", // HAVING distance < '%s' ORDER BY distance LIMIT 0 , 20",
  mysqli_real_escape_string($con, $center_lat),
  mysqli_real_escape_string($con, $center_lng),
  mysqli_real_escape_string($con, $center_lat),
  mysqli_real_escape_string($con, $radius));
//$result = mysql_query($query);
$result=mysqli_query($con,$query);

if (!$result) {
  die("Invalid query: " . mysqli_error($con));
}

header("Content-type: text/xml");

// Iterate through the rows, adding XML nodes for each
while ($row = @mysqli_fetch_assoc($result)){
  $node = $dom->createElement("marker");
  $newnode = $parnode->appendChild($node);
  $newnode->setAttribute("name", $row['name']);
  $newnode->setAttribute("address", $row['address']);
  $newnode->setAttribute("lat", $row['lat']);
  $newnode->setAttribute("lng", $row['lng']);
  $newnode->setAttribute("distance", $row['distance']);
}

echo $dom->saveXML();

MySQL到XML消息头问题

1 个答案: