0
我在PHP这个功能：“对不起，似乎没有要任何结果”PDO SQL查询不能如预期运行
function getFilteredList($conn, $limit, $offset, $job_app, $Job_Type, $location) {
/*
<option value="0">Select category or Search all</option>
<option value="1">Business and Administration</option>
<option value="2">Education and Training</option>
<option value="3">Leisure, Travel and Tourism</option>
<option value="4">Information and Communication Technology</option>
*/
if($Job_Type == 1){
$Job_Type2 = '%1%';
}elseif($Job_Type == 2){
$Job_Type2 = '%2%';
}elseif($Job_Type == 3){
$Job_Type2 = '%3%';
}elseif($Job_Type == 4){
$Job_Type2 = '%4%';
}
$query = $conn->prepare("SELECT * FROM `jobs_current` WHERE `job_type` LIKE :job_type ORDER BY `jobs_current`.`job_comp_loc` ASC LIMIT :limit OFFSET :offset ");
$query->bindParam(':limit', $limit, PDO::PARAM_INT);
$query->bindParam(':offset', $offset, PDO::PARAM_INT);
$query->bindParam(':job_type', $Job_Type2, PDO::PARAM_STR);
$query->execute();
$end = "";
while ($row = $query->fetch(PDO::FETCH_ASSOC))
{
if($row['job_app'] == $job_app){
$end = $end.'<tr class="hoverOver"><td class="td1"><a href="/jobview.php?id='.$row['id'].'">'.$row['job_comp_loc'].'</a></td>';
$end = $end.'<td class="td2"><a href="/jobview.php?id='.$row['id'].'">'.$row['job_desc'].'</a></td>';
$end = $end.'<td class="td3"><a href="/jobview.php?id='.$row['id'].'">'.$row['location'].'</a></td></tr>';
}else if($job_app == 0){
$end = $end.'<tr class="hoverOver"><td class="td1"><a href="/jobview.php?id='.$row['id'].'">'.$row['job_comp_loc'].'</a></td>';
$end = $end.'<td class="td2"><a href="/jobview.php?id='.$row['id'].'">'.$row['job_desc'].'</a></td>';
$end = $end.'<td class="td3"><a href="/jobview.php?id='.$row['id'].'">'.$row['location'].'</a></td></tr>';
}else{
return '<td class="td1"></td><td class="td2" style="text-align: center;color: red;">Sorry, there doesnt seem to be any results!</td><td class="td3"></td>';
}
}
return $end;
}
如果我通过它只是返回job_app任何参数虽然有结果，因为其中一些行实际上具有job-app参数。如果我将job_app作为2并将job_type作为2，它应该会得到6个结果，但是它不会。培训相关PHP的其他部分：
DB列表功能：
$Job_Type = null;
$Location = null;
$Job_App = 0;
if(!$_GET['Job_App'] == null){
$Job_App = $_GET['Job_App'];
}
if(!$_GET['Job_Type'] == null){
if(!$_GET['Job_Type'] == 0){
$Job_Type = $_GET['Job_Type'];
}
}
if(!$_GET['Location'] == null){
$Location = $_GET['Location'];
}
//irreleven stuff in between
if(!$_GET['page'] == null){
$pageno = ($_GET['page']-1)*15;
if(!$_GET['Job_Type'] == null){
echo ''.getFilteredList($dbh, 15, $pageno, $Job_App, $Job_Type, $Location);
}else{
echo ''.getGenericList($dbh, 15, $pageno, $Job_App);
}
}else{
if(!$_GET['Job_Type'] == null){
echo ''.getFilteredList($dbh, 15, 0, $Job_App, $Job_Type, $Location);
}else{
echo ''.getGenericList($dbh, 15, 0, $Job_App);
}
}
我思念的东西，以正确地过滤了他们：调用函数
function getGenericList($conn, $limit, $offset, $job_app) {
$query = $conn->prepare("SELECT * FROM `jobs_current` ORDER BY `jobs_current`.`job_comp_loc` ASC LIMIT :limit OFFSET :offset ");
$query->bindParam(':limit', $limit, PDO::PARAM_INT);
$query->bindParam(':offset', $offset, PDO::PARAM_INT);
$query->execute();
$end = "";
while ($row = $query->fetch(PDO::FETCH_ASSOC))
{
if($row['job_app'] == $job_app){
$end = $end.'<tr class="hoverOver"><td class="td1"><a href="/jobview.php?id='.$row['id'].'">'.$row['job_comp_loc'].'</a></td>';
$end = $end.'<td class="td2"><a href="/jobview.php?id='.$row['id'].'">'.$row['job_desc'].'</a></td>';
$end = $end.'<td class="td3"><a href="/jobview.php?id='.$row['id'].'">'.$row['location'].'</a></td></tr>';
}else if($job_app == 0){
$end = $end.'<tr class="hoverOver"><td class="td1"><a href="/jobview.php?id='.$row['id'].'">'.$row['job_comp_loc'].'</a></td>';
$end = $end.'<td class="td2"><a href="/jobview.php?id='.$row['id'].'">'.$row['job_desc'].'</a></td>';
$end = $end.'<td class="td3"><a href="/jobview.php?id='.$row['id'].'">'.$row['location'].'</a></td></tr>';
}else{
return '<td class="td1"></td><td class="td2" style="text-align: center;color: red;">Sorry, there doesnt seem to be any results!</td><td class="td3"></td>';
}
}
return $end;
}
PHP文件？我已经读了几遍自己，看起来是正确的，但没有按照预期过滤。
编辑：
我似乎并没有把它不够清晰，但它与查询，因为它返回while循环结束else语句成功。
你不能，据我所知，使用占位符在'limit'，'为了by'或'group by'子句 – RamRaider
@RamRaider我在这里看到，只有在使用预建的字符串而不是动态字符串的情况下才能使用。 – Deckerz
我假设你已经尝试使用phpMyAdmin或类似的查询来查看生成的内容 – RiggsFolly