我正在尝试为数据库构建下拉过滤器搜索，它似乎与我现有的升序/降序逻辑语句相冲突。
当我尝试将下拉菜单过滤器的 if 语句移动到升序/降序语句上方时，过滤器无法正常工作，即当我尝试过滤“已分析”时，它也给了我另一个状态。
另一方面，当我尝试将下拉过滤器的 if 语句移动到排序语句下方时，过滤器搜索工作正常，但在尝试对表排序时，我得到 $sql 未定义错误。
print("<form action='patients.php' method='get'>");
// cs = case status
print("<select name='cs'>
<option selected='selected' value=''>--Select Case Status--</option>
<option value='1'>Pass</option>
<option value='2'>Failed</option>
<option value='3'>Pass With Error</option>
<option value='4'>Indeterminate</option>
</select>");
// sf = status flagged
print("<select name='sf'>
<option selected='selected' value=''>--Select Flagged Status--</option>
<option value='Analyzed'>Analyzed Case</option>
<option value='New Case'>New Case</option>
<option value='Updated Case'>Updated Case (New Images)</option>
<option value='None'>No Status Flag</option>
</select>");
print("<input type='submit' name='search' value='Search'></form>");
//print("<a href = 'patients.php?case=failed'>View Failed Cases</a><br><br>");
}
printf('<table border=1><tr><th><a href ="patients.php?pID=%s">Patient ID</a>',empty($_GET['pID']) || $_GET['pID'] == 'asc' ? 'desc' : 'asc');
printf('</th><th><a href ="patients.php?caseStatus=%s">Case Status</a>',
empty($_GET['caseStatus']) || $_GET['caseStatus'] == 'asc' ? 'desc' : 'asc');
printf('</th><th>Sub Status</th><th>Number of Cases</th><th>Status Reason</th><th><a href ="patients.php?dateReviewed=%s">Date Reviewed</a>',
empty($_GET['dateReviewed']) || $_GET['dateReviewed'] == 'asc' ? 'desc' : 'asc');
printf('</th><th><a href ="patients.php?statusFlag=%s">Status Flag</a>',
empty($_GET['statusFlag']) || $_GET['statusFlag'] == 'asc' ? 'desc' : 'asc');
printf('</th></tr>');
// search filter, takes the case status (cs) and status flag (sf) and filter according to selection
if (isset($_GET['cs']) && isset($_GET['sf']) ) {
$cs= $_GET['cs'];
$sf= $_GET['sf'];
if (($sf==NULL) && ($cs!==NULL)) {
$sql = "SELECT patientid, sub_status_lookup.CASE_STATUS, sub_status_lookup.SUB_STATUS, count(caseid) as cases_count, cases.comments, date_mod, caseid, user_mod, status_flag FROM cases, sub_status_lookup
Where cases.status = '".$cs."'
Group By patientid, cases.status";
} else if (($sf!==NULL) && ($cs==NULL)) {
$sql = "SELECT patientid, sub_status_lookup.CASE_STATUS, sub_status_lookup.SUB_STATUS, count(caseid) as cases_count, cases.comments, date_mod, caseid, user_mod, status_flag FROM cases, sub_status_lookup
Where cases.status_flag = '".$sf."'
Group By patientid, cases.status";
} else if (($cs==NULL)&&($sf==NULL)){
$sql = "SELECT patientid, sub_status_lookup.CASE_STATUS, sub_status_lookup.SUB_STATUS, count(caseid) as cases_count, cases.comments, date_mod, caseid, user_mod, status_flag FROM cases, sub_status_lookup
Where cases.status = sub_status_lookup.SUB_ID
Group By patientid, cases.status";
} else {
$sql = "SELECT patientid, sub_status_lookup.CASE_STATUS, sub_status_lookup.SUB_STATUS, count(caseid) as cases_count, cases.comments, date_mod, caseid, user_mod, status_flag FROM cases, sub_status_lookup
Where cases.status = '".$cs."' and cases.status_flag = '".$sf."'
Group By patientid, cases.status";
}
$orderBy ="Order By patientid";
}
else {
$orderBy = "Order By patientid";
$sql = "SELECT patientid, sub_status_lookup.CASE_STATUS, sub_status_lookup.SUB_STATUS, count(caseid) as cases_count, cases.comments, date_mod, caseid, user_mod, status_flag FROM cases, sub_status_lookup
Where cases.status = sub_status_lookup.SUB_ID
Group By patientid, cases.status ".$orderBy;
}
//takes the patient id, status description, count of cases then groups them by patient id ordering them by their status
if (isset($_GET['pID'])){
switch($_GET['pID']){
case "asc":
$orderBy = " ORDER BY patientid ASC";
break;
case "desc":
$orderBy = " ORDER BY patientid DESC";
break;
default:
$orderBy = " ORDER BY patientid ASC";
break;
$sql = "SELECT patientid, sub_status_lookup.CASE_STATUS, sub_status_lookup.SUB_STATUS, count(caseid) as cases_count, cases.comments, date_mod, caseid, user_mod, status_flag FROM cases, sub_status_lookup
Where cases.status = sub_status_lookup.SUB_ID
Group By patientid, cases.status ".$orderBy;
}
} else if (isset($_GET['caseStatus'])){
switch($_GET['caseStatus']){
case "asc":
$orderBy = " ORDER BY sub_status_lookup.CASE_STATUS ASC";
break;
case "desc":
$orderBy = " ORDER BY sub_status_lookup.CASE_STATUS DESC";
break;
default:
$orderBy = " ORDER BY sub_status_lookup.CASE_STATUS ASC";
break;
$sql = "SELECT patientid, sub_status_lookup.CASE_STATUS, sub_status_lookup.SUB_STATUS, count(caseid) as cases_count, cases.comments, date_mod, caseid, user_mod, status_flag FROM cases, sub_status_lookup
Where cases.status = sub_status_lookup.SUB_ID
Group By patientid, cases.status ".$orderBy;
}
} else if (isset($_GET['dateReviewed'])){
switch($_GET['dateReviewed']){
case "asc":
$orderBy = " ORDER BY date_mod ASC";
break;
case "desc":
$orderBy = " ORDER BY date_mod DESC";
break;
default:
$orderBy = " ORDER BY date_mod ASC";
break;
$sql = "SELECT patientid, sub_status_lookup.CASE_STATUS, sub_status_lookup.SUB_STATUS, count(caseid) as cases_count, cases.comments, date_mod, caseid, user_mod, status_flag FROM cases, sub_status_lookup
Where cases.status = sub_status_lookup.SUB_ID
Group By patientid, cases.status ".$orderBy;
}
// Updated to work, statusFlag now stored in DB as status_flag 6/4/2013 - Allen
} else if (isset($_GET['statusFlag'])){
switch($_GET['statusFlag']){
case "asc":
$orderBy = " ORDER BY status_flag ASC";
break;
case "desc":
$orderBy = " ORDER BY status_flag DESC";
break;
default:
$orderBy = " ORDER BY status_flag ASC";
break;
$sql = "SELECT patientid, sub_status_lookup.CASE_STATUS, sub_status_lookup.SUB_STATUS, count(caseid) as cases_count, cases.comments, date_mod, caseid, user_mod, status_flag FROM cases, sub_status_lookup
Where cases.status = sub_status_lookup.SUB_ID
Group By patientid, cases.status ".$orderBy;
}
} else if (isset($_GET['lastUser'])){
switch($_GET['lastUser']){
case "asc":
$orderBy = " ORDER BY user_mod ASC";
break;
case "desc":
$orderBy = " ORDER BY user_mod DESC";
break;
default:
$orderBy = " ORDER BY user_mod ASC";
break;
$sql = "SELECT patientid, sub_status_lookup.CASE_STATUS, sub_status_lookup.SUB_STATUS, count(caseid) as cases_count, cases.comments, date_mod, caseid, user_mod, status_flag FROM cases, sub_status_lookup
Where cases.status = sub_status_lookup.SUB_ID
Group By patientid, cases.status ".$orderBy;
}
} else { $orderBy = "Order By patientid";
$sql = "SELECT patientid, sub_status_lookup.CASE_STATUS, sub_status_lookup.SUB_STATUS, count(caseid) as cases_count, cases.comments, date_mod, caseid, user_mod, status_flag FROM cases, sub_status_lookup
Where cases.status = sub_status_lookup.SUB_ID
Group By patientid, cases.status ".$orderBy;
}
//commented 5.10.2013 - allen
/*while (isset($_GET['sort'])) {
$sortOrder = ASC;
if ($_GET['sort'] == 'patientID') { $sql .= "Order by patientid ".$sortOrder;}
else if ($_GET['sort'] == 'caseStatus') { $sql .= "Order By sub_status_lookup.CASE_STATUS ".$sortOrder;}
else if ($_GET['sort'] == 'dateReviewed') { $sql .= "Order by date_mod ".$sortOrder; }
else if ($_GET['sort'] == 'statusFlag') { $sql .= "Order by date_mod ".$sortOrder; }
}
if (!isset($_GET['sort'])) { $sql .= "Order By patientid"; }*/
$result = mysql_query($sql, $connection);
$count = 1;
$prvPatId = "";
if($result !== FALSE) {
while ($record = mysql_fetch_row($result)) {
$patient = $record[0];
$statusD = $record[1];
$substatusD = $record[2];
$caseCount = $record[3];
$statusReason = $record[4];
$dateReviewed = $record[5];
$caseID = $record[6];
$lastUser =$record[7];
statusFlagged($patient,$caseID,$dateReviewed);
$statusFlagged = $record[8];
//StatusFlag should be working as of 5/30/2013. Please double check
$patLink = "<a href='case.php?dirName=".$rootDirectory.$patient."&patient=".$patient."' >".$patient."</a>";
if($prvPatId == $patient) {
$patLink = " ";
} else {
$count ++;
$prvPatId = $patient;
}
print("<tr><td>".$patLink."</td><td>".$statusD."</td><td>".$substatusD."</td><td>".$caseCount."</td><td>".$statusReason."</td><td>".$dateReviewed."</td><td>".$statusFlagged."</td></tr>");
}
}
mysql_free_result($result);
//at the end prints the total number of patients (patient ids- unique)
print("<tr><th colspan=3>Total Patients: ".$count."</th></tr>");
print("</table>"