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我正在使用PHP5和MySQL開發一個網站。我使用mysqlnd驅動程序，我有一個使用預處理語句執行任何查詢的類。使用預準備語句在PHP5中獲取MySQL存儲過程的結果
我有一個表，我儲存關於照片的信息，就像是拍攝地點等的其ID，名稱，經緯度
我創建了以下存儲過程，並根據實施Haversin公式是什麼我在這裏找到：http://www.scribd.com/doc/2569355/Geo-Distance-Search-with-MySQL
的程序是：
DELIMITER $$
CREATE PROCEDURE imagesNearMe(IN user_lat DOUBLE, IN user_lng DOUBLE, IN distance INT)
READS SQL DATA
BEGIN
DECLARE lat1 DOUBLE;
DECLARE lng1 DOUBLE;
DECLARE lat2 DOUBLE;
DECLARE lng2 DOUBLE;
SET lng1 = user_lng - (distance/ABS(COS(RADIANS(user_lat)) * 69));
SET lng2 = user_lng + (distance/ABS(COS(RADIANS(user_lat)) * 69));
SET lat1 = user_lat - (distance/69);
SET lat2 = user_lat + (distance/69);
SELECT id, title, description, location, lat, lng, user_id,
3956 * 2 * ASIN(SQRT(
POWER(SIN((user_lat - ABS(lat)) * pi()/180/2), 2) +
COS(user_lat * pi()/180) * COS(ABS(lat) * pi() * 180) * POWER(SIN((user_lng - lng) * pi()/180/2), 2))) as distance
FROM images
WHERE (lat IS NOT NULL) AND (lng IS NOT NULL)
AND (lat BETWEEN lat1 AND lat2)
AND (lng BETWEEN lng1 AND lng2)
ORDER BY distance ASC;
END$$
DELIMITER ;
程序工作正常，當我從MySQL控制檯調用它，並返回預期的數據。問題是當我嘗試從我的PHP代碼中調用該過程時。出於某種原因，我無法獲取該過程返回的數據。
我有以下測試方法：
public function CallProcedure($procedure, $arguments)
{
print_r($procedure);
echo "<br>*************************<br>";
if(! $this->_sqlStatement = $this->_dbSession->prepare($procedure))
{
return FALSE;
}
else
{
//Prepare succeeded
if($arguments)
{
//if we have arguments we have to prepare and bind the to the query
//get the bind string
$bindString = array_shift($arguments);
//get references to the parameters passed to the query
$bindParamRefs = array();
foreach($arguments as $key => $value)
{
$bindParamRefs[$key] = &$arguments[$key];
}
//put a reference to the bindString inside the bindParamsRefs array
array_unshift($bindParamRefs, $bindString);
print_r($bindParamRefs);
echo "<br>*************************<br>";
//Bind the params to the query
if(!call_user_func_array(array($this->_sqlStatement, "bind_param"), $bindParamRefs))
{
return FALSE;
}
else
{
print_r($this->_sqlStatement);
echo "<br>*************************<br>";
if(! $this->_sqlStatement->execute())
{
return FALSE;
}
else
{
do
{
$this->_sqlStatement->store_result();
print_r($this->_sqlStatement);
echo "<br>*************************<br>";
$resultSet = array();
$resultMetadata = $this->_sqlStatement->result_metadata();
$resultVariables = array();
$resultData = array();
while($resultField = $resultMetadata->fetch_field())
{
$resultVariables[] = &$resultData[$resultField->name];
}
call_user_func_array(array($this->_sqlStatement, "bind_result"), $resultVariables);
$i = 0;
while($this->_sqlStatement->fetch())
{
$resultSet[$i] = array();
foreach($resultData as $fieldName => $fieldData)
{
$resultSet[$i][$fieldName] = $fieldData;
}
$i++;
}
print_r($resultSet);
echo "<br>*************************<br>";
print_r($resultMetadata);
echo "<br>*************************<br>";
print_r($resultVariables);
echo "<br>*************************<br>";
print_r($resultData);
echo "<br>*************************<br>";
$this->_sqlStatement->free_result();
}
while($this->_sqlStatement->more_results() && $this->_sqlStatement->next_result());
$this->_sqlStatement->close();
}
}
}
}
}
（$這 - > _ dbSession是mysqli的的一個實例）
並且通過上面的代碼所產生的輸出是：
CALL imagesNearMe(?, ?, ?)
*************************
Array ([0] => ddi [1] => 38.246214 [2] => 38.246214 [3] => 150)
*************************
mysqli_stmt Object ([affected_rows] => -1 [insert_id] => 0 [num_rows] => 0 [param_count] => 3 [field_count] => 0 [errno] => 0 [error] => [sqlstate] => 00000 [id] => 1)
*************************
mysqli_stmt Object ([affected_rows] => 0 [insert_id] => 0 [num_rows] => 0 [param_count] => 3 [field_count] => 8 [errno] => 0 [error] => [sqlstate] => 00000 [id] => 1)
*************************
Array ()
*************************
mysqli_result Object ([current_field] => 8 [field_count] => 8 [lengths] => [num_rows] => 0 [type] => 1)
*************************
Array ([0] => [1] => [2] => [3] => [4] => [5] => [6] => [7] =>)
*************************
Array ([id] => [title] => [description] => [location] => [lat] => [lng] => [user_id] => [distance] =>)
*************************
正如你可以看到的那樣，即使語句正確執行，也不會返回任何數據，即使通過調用完全相同的過程並從mysql控制檯返回4個相同的參數sults。
我錯過了什麼嗎？我完全迷失在這裏。
在此先感謝您的幫助。
UPDATE
下面的代碼：
$dbSession = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME, DB_PORT);
if($dbSession->connect_errno)
{
die($dbSession->connect_error);
}
else
{
$query = "CALL imagesNearMe(38.2462140, 21.735098, 50)";
if(!$dbSession->multi_query($query))
{
die($dbSession->error);
}
else
{
do
{
if($result = $dbSession->store_result())
{
var_dump($result->fetch_all());
echo "<br>******************************************************<br>";
$result->free();
}
else
{
die($dbSession->error);
}
}
while($dbSession->more_results() && $dbSession->next_result());
$dbSession->close();
}
}
返回所有的結果我希望，但爲什麼不是準備好的語句的工作？
感謝。我會嘗試一下，儘快報告。 – feugatos