我正在尝试将mySQL查询转换为PDO。
我已经部分地获得了预期的数据，但我无法获得整个查询来获取正确的数据。 mySQL查询能够提取4个类别，每个类别中的相应条目数被拉动和显示。 PDO转换查询仅提取3个类别，并且没有任何类别的条目
我假设我没有正确转换查询，但我找不到问题所在。
我还想了解如何使用新代码限制SQL注入的曝光。
旧查询（工作）
function listPuppies(){
include("db_connect.php");
$query = " SELECT *
FROM tblLitters
WHERE available = 1
ORDER BY litBreed, litMother";
$resultOut = mysql_query($query, $connection) or die ("<br>Error in query: $query.".mysql_error($connection));
//Check if a row is returned
if (mysql_num_rows($resultOut) > 0) {
while($rowOut = mysql_fetch_array($resultOut)){
$litterID = $rowOut['litterID'];
$litMother = $rowOut['litMother'];
$litBreed = $rowOut['litBreed'];
$litBreedDate = $rowOut['litBreedDate'];
$litDesc = $rowOut['litDesc'];
$litterImage = $rowOut['litImage'];
$litterImageThumb = $rowOut['litterImageThumb'];
$litBreedCost = $rowOut['litBreedCost'];
if ($litterImageThumb == ''){
$litterPic = "";
}else{
$litterPic = "<img src=\"images/Litters/".$litterImageThumb."\" align=\"right\" style=\"padding:1px; margin:3px; border:6px solid #fff;\">";
}
echo "<table width=\"650\"><tr>\n";
if ($breed <> $rowOut['litBreed']){
$breed = $rowOut['litBreed'];
echo "</tr></table>\n";
echo "<br><br><div class=\"breedHead\">$breed's For Sale</div><hr color=\"#C5FBB4\">\n";
echo "<br><table width=\"650\" cellspacing=\"0\" cellpadding=\"5\"><tr><td colspan=\"3\"><table bgcolor=\"#044726\" width=\"100%\" border=\"1\" bordercolor=\"#137b48\" cellpadding=\"6\"><tr><td>".$litterPic."<span style=\"font-size:12pt;\">".$litDesc."<br><br><strong>Mother:</strong> $litMother<br><strong>Cost: </strong>$$litBreedCost<br><br></span></td></tr></table></td></tr><tr><td colspan=\"3\"> </td></tr>";
$counter = 0;
}else{
if ($pupLitterID <> $rowOut['litterID']){
echo "</table>\n";
echo "<br><br><br><table width=\"650\" cellspacing=\"0\" cellpadding=\"5\"><tr><td colspan=\"3\"><table bgcolor=\"#044726\" width=\"100%\" border=\"1\" bordercolor=\"#137b48\" cellpadding=\"6\"><tr><td>".$litterPic."<span style=\"font-size:12pt;\">".$litDesc."<br><br><strong>Mother:</strong> $litMother<br><strong>Cost: </strong>$$litBreedCost<br><br></span></td></tr></table></td></tr><tr><td colspan=\"3\"> </td></tr>";
$counter = 0;
}
}
$query = " SELECT *
FROM tblPuppies
WHERE litterID = $litterID";
$result = mysql_query($query, $connection) or die ("<br>Error in query: $query.".mysql_error($connection));
//$breed = $row['pupBreed'];
$counter = 0;
//Check is a row is returned
if (mysql_num_rows($result) > 0) {
//old table start
while($row = mysql_fetch_array($result)){
$status = $row['pupStatus'];
$pupLitterID = $row['litterID'];
if ($status == "For Sale"){
if ($row['pupOnHold'] == 1){
$status = '<font color=\"red\">On Hold</font>';
}
if ($row['pupSold'] == 1){
$status = '<font color=\"red\">Sold</font>';
}
}
if ($row['pupSex'] == 'F'){
$sex = 'Female';
}else{
$sex = 'Male';
}
//used to change popup window position depending on where thumbnail is palced on page
if ($counter == 0){
echo "<td width=\"33%\"><a class=\"thumbnailLeft\" href=\"#thumb\">";
}
if ($counter == 1){
echo "<td width=\"33%\"><a class=\"thumbnail\" href=\"#thumb\">";
}
if ($counter == 2){
echo "<td width=\"33%\"><a class=\"thumbnailRight\" href=\"#thumb\">";
}
echo "<div align=\"center\"><img src=\"images/ForSale/".$row['pupPicThumb']."\" style=\"padding:1px; border:6px solid #fff;\"><br>".$row['pupName']." - $sex<br><strong>$status</strong></div><span><img src=\"images/ForSale/".$row['pupPic']."\"></span></a><div align=\"center\"><a href=\"mailto:sales@adorablepuppies.com.au?Subject=Interest in puppy ".$row['pupName']."\">Contact Us About This Pup</a></div></td>";
if ($counter == 2){
echo "</tr><tr>\n";
$counter = -1;
if ($breed <> $rowOut['litBreed']){
$breed = $rowOut['litBreed'];
echo "</table>\n";
echo "<br><br><div class=\"breedHead\">$breed's For Sale</div><hr color=\"#C5FBB4\"><br>\n";
echo "<table width=\"95%\"><tr><td>".$litterPic."<span style=\"font-size:12pt;\">".$litDesc."<br><br><strong>Mother:</strong> $litMother<br><strong>Litter Birth Date: </strong>$litBreedDate<br><br></span></td></tr></table>";
echo "<table width=\"650\"><tr>\n";
$counter = -1;
}
}
$counter = $counter + 1;
}
echo "</tr></table>\n";
}else{
echo "There are no puppies left for sale in this litter, sorry.<br><br>Please check back again soon.";
}// End IF/ELSE
}//end outer while
}else{
echo "There are currently no puppies for sale.<br>Please check back again soon.";
}//end outer if
}
新查询（不完全正常工作）
function listPuppies(){
include("db_connect.php");
try {
$stmt = $connection->prepare("SELECT * FROM tblLitters WHERE available = 1");
$connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$stmt->execute();
}
//Catch PDO Query Error
catch(PDOException $e) {
echo "Error: " . $e->getMessage();
}
// set the resulting array to associative
//$result = $stmt->fetch(PDO::FETCH_ASSOC);
if ($stmt->fetchColumn() > 0) {
foreach ($stmt->fetchAll(PDO::FETCH_ASSOC) as $rowOut){
$litterID = $rowOut['litterID'];
$litMother = $rowOut['litMother'];
$litBreed = $rowOut['litBreed'];
$litBreedDate = $rowOut['litBreedDate'];
$litDesc = $rowOut['litDesc'];
$litterImage = $rowOut['litImage'];
$litterImageThumb = $rowOut['litterImageThumb'];
$litBreedCost = $rowOut['litBreedCost'];
if ($litterImageThumb == ''){
$litterPic = "";
}else{
$litterPic = "<img src=\"images/Litters/".$litterImageThumb."\" align=\"right\" style=\"padding:1px; margin:3px; border:6px solid #fff;\">";
}
echo "<table width=\"600\"><tr>\n";
if ($breed <> $rowOut['litBreed']){
$breed = $rowOut['litBreed'];
echo "</tr></table>\n";
echo "<br><br><div class=\"breedHead\">$breed's For Sale</div><hr color=\"#C5FBB4\">\n";
echo "<br><table width=\"600\" cellspacing=\"0\" cellpadding=\"5\"><tr><td colspan=\"3\"><table bgcolor=\"#044726\" width=\"100%\" border=\"1\" bordercolor=\"#137b48\" cellpadding=\"6\"><tr><td>".$litterPic."<span style=\"font-size:12pt;\">".$litDesc."<br><br><strong>Mother:</strong> $litMother<br><strong>Cost: </strong>$$litBreedCost<br><br></span></td></tr></table></td></tr><tr><td colspan=\"3\"> </td></tr>";
$counter = 0;
}else{
if ($pupLitterID <> $rowOut['litterID']){
echo "</table>\n";
echo "<br><br><br><table width=\"600\" cellspacing=\"0\" cellpadding=\"5\"><tr><td colspan=\"3\"><table bgcolor=\"#044726\" width=\"100%\" border=\"1\" bordercolor=\"#137b48\" cellpadding=\"6\"><tr><td>".$litterPic."<span style=\"font-size:12pt;\">".$litDesc."<br><br><strong>Mother:</strong> $litMother<br><strong>Cost: </strong>$$litBreedCost<br><br></span></td></tr></table></td></tr><tr><td colspan=\"3\"> </td></tr>";
$counter = 0;
}
}
$stmt1 = $connection->prepare("SELECT * FROM tblPuppies WHERE litterID = .$litterID.");
$counter = 0;
//Check if a row is returned
if ($stmt1->fetchColumn() > 0) {
//old table start
foreach ($stmt1->fetch(PDO::FETCH_ASSOC) as $rowOut){
$status = $row['pupStatus'];
$pupLitterID = $row['litterID'];
if ($status == "For Sale"){
if ($row['pupOnHold'] == 1){
$status = '<font color=\"red\">On Hold</font>';
}
if ($row['pupSold'] == 1){
$status = '<font color=\"red\">Sold</font>';
}
}
if ($row['pupSex'] == 'F'){
$sex = 'Female';
}else{
$sex = 'Male';
}
//used to change popup window position depending on where thumbnail is placed on page
if ($counter == 0){
echo "<td width=\"33%\"><a class=\"thumbnailLeft\" href=\"#thumb\">";
}
if ($counter == 1){
echo "<td width=\"33%\"><a class=\"thumbnail\" href=\"#thumb\">";
}
if ($counter == 2){
echo "<td width=\"33%\"><a class=\"thumbnailRight\" href=\"#thumb\">";
}
echo "<div align=\"center\"><img src=\"images/ForSale/".$row['pupPicThumb']."\" style=\"padding:1px; border:6px solid #fff;\"><br>".$row['pupName']." - $sex<br><strong>$status</strong></div><span><img src=\"images/ForSale/".$row['pupPic']."\"></span></a><div align=\"center\"><a href=\"mailto:sales@adorablepuppies.com.au?Subject=Interest in puppy ".$row['pupName']."\">Contact Us About This Pup</a></div></td>";
if ($counter == 2){
echo "</tr><tr>\n";
$counter = -1;
if ($breed <> $rowOut['litBreed']){
$breed = $rowOut['litBreed'];
echo "</table>\n";
echo "<br><br><div class=\"breedHead\">$breed's For Sale</div><hr color=\"#C5FBB4\"><br>\n";
echo "<table width=\"95%\"><tr><td>".$litterPic."<span style=\"font-size:12pt;\">".$litDesc."<br><br><strong>Mother:</strong> $litMother<br><strong>Litter Birth Date: </strong>$litBreedDate<br><br></span></td></tr></table>";
echo "<table width=\"600\"><tr>\n";
$counter = -1;
}
}
$counter = $counter + 1;
}
echo "</tr></table>\n";
}else{
echo "There are no puppies left for sale in this litter, sorry.<br><br>Please check back again soon.";
}// End IF/ELSE
}//end outer while
}else{
echo "There are currently no puppies for sale.<br>Please check back again soon.";
}//end outer if
}
提前致谢
答案 0 :(得分：1)
我发现我的问题是类别中没有显示的条目。
在我的查询中，我尝试了SELECT * WHERE field1 = .$variable.
但我需要将变量绑定为参数，如下所示：
$stmt1 = $connection->prepare("SELECT * FROM tblPuppies WHERE litterID = :litterID");
$stmt1->bindParam(':litterID', $litterID);
$stmt1->execute();
这已按预期成功填充了我的类别。
值得注意的是，你的常识的答案是正确的，但只回答了我的部分问题。阅读这些答案的任何人都应该注意到这两个答案。
EDIT ......
正如ShowDev所指出的那样 ＆＃39; if（$ stmt-＆gt; fetchColumn（）＆gt; 0）＆＃39; condition将计数提前到第二行，然后仅返回剩余的3条记录。
ShowDev发布的链接显示了此类查询的正确程序
答案 1 :(得分：-1)
摆脱if ($stmt->fetchColumn() > 0)条件
这个无用的消息改为此
$found = $stmt->fetchAll(PDO::FETCH_ASSOC);
if ($found) {
foreach ($found as $rowOut){