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我試圖顯示一個窗體中的事件的元素供用戶編輯。我希望輸入或選擇當前值，但我希望以某種方式使其不必驗證各種信息。我有一個日曆選擇器，並希望使用時間下拉菜單。此代碼掛起幾分鐘，然後返回一個完全空白的頁面。我只是用所有的查詢重載服務器，或者我的代碼有問題嗎？php文件需要很長時間加載然後返回空白頁mysqli
$id = $_POST['id'];
/* Edit Event Form */
echo '<form action="edit-event-process.php" method="post">';
echo '<center><table style="text-align:center">';
/* Set up queries individually to allow for dropdowns for hour, minute, am/pm, category */
/************* Query for Name *******************/
$queryName = mysqli_query($link, "SELECT Name FROM events WHERE id = " . $id);
while($rowName = mysqli_fetch_assoc($queryName)){
foreach($rowName as $keyName => $valName){
echo '<tr><td>Name: </td><td><input type="text" id="Name" name="Name" value="' . $valName . '"></td></tr>';
}
}
/************* Query for Description **************/
$queryDesc = mysqli_query($link, "SELECT Description FROM events WHERE id = " . $id);
while($rowDesc = mysqli_fetch_assoc($queryDesc)){
foreach($rowDesc as $keyDesc => $valDesc){
echo '<tr><td>Description: </td><td><input type="text" id="Description" name="Description" value="' . $valDesc . '"></td></tr>';
}
}
/************* Query for Start Date ***************/
$queryStDt = mysqli_query($link, "SELECT StartDate FROM events WHERE id = " . $id);
while($rowStDt = mysqli_fetch_assoc($queryStDt)){
foreach($rowStDt as $keyStDt => $valStDt){
echo '<tr><td>Start Date: </td><td><input type="text" id="StartDate" name="StartDate" value="' . $valStDt . '"></td></tr>';
}
}
/************* Query for All Day **************/
$queryAllDay = mysqli_query($link, "SELECT AllDay FROM events WHERE id = " . $id);
while($rowAllDay = mysqli_fetch_assoc($queryAllDay)){
foreach($rowAllDay as $keyAllDay => $valAllDay){
if ($valAllDay == '1'){
echo '<tr><td>All Day? </td><td><input type="checkbox" id="AllDay" name="AllDay" checked="checked"></td></tr>';
}
else {
echo '<tr><td>All Day? </td><td><input type="checkbox" id="AllDay" name="AllDay"></td></tr>';
}
}
}
/************/
echo '<div id="dates">';
/************/
/************* Query for Start Hour ****************/
echo '<tr><td>Start Hour</td><td><select name="StartHour" id="StartHour">';
$queryStHr = mysqli_query($link, "SELECT TIME_FORMAT(StartTime, '%h') AS StartHour WHERE id = " . $id);
while ($rowStHr = mysqli_fetch_assoc($resultStHr)){
foreach($rowStHr as $keyStHr => $valStHr){
$selectedStHr = $valStHr;
}
}
if ($valStHr == "" || $valStHr == "null"){
echo '<option value="null">--</option>';
}
else {
echo '<option value="'.$valStHr.'">' . $valStHr . '</option>';
echo '<option value="null">--</option>';
}
$sthr = 0;
while($sthr < 13){
echo '<option value="'.$sthr.'">' . $sthr . '</option>';
$sthr = $sthr++;
}
echo '</select></td></tr>';
/************* Query for Start Min *****************/
echo '<tr><td>Start Minute</td><td><select name="StartMin" id="StartMin">';
$queryStMin = mysqli_query($link, "SELECT TIME_FORMAT(StartTime, '%m') AS StartMin WHERE id = " . $id);
while ($rowStMin = mysqli_fetch_assoc($resultStMin)){
foreach($rowStMin as $keyStMin => $valStMin){
$selectedStMin = $valStMin;
}
}
if ($valStMin == "" || $valStMin == "null"){
echo '<option value="null">--</option>';
}
else{
if ($valStMin < 10){
echo '<option value="0'.$valStMin.'">0' . $valStMin . '</option>';
echo '<option value="null">--</option>';
}
else {
echo '<option value="'.$valStMin.'">' . $valStMin . '</option>';
echo '<option value="null">--</option>';
}
}
$stmin = 0;
while($stmin < 60){
if ($stmin < 10){
echo '<option value="0'.$stmin.'">0' . $stmin . '</option>';
}
else {
echo '<option value="'.$stmin.'">' . $stmin . '</option>';
}
$stmin = $stmin +5;
}
echo '</select></td></tr>';
/************* Query for Start AMPM ****************/
echo '<tr><td>Start AM/PM</td><td><select name="StAP" id="StAP">';
$queryStAP = mysqli_query($link, "SELECT TIME_FORMAT(StartTime, '%p') AS StAP WHERE id = " . $id);
while ($rowStAP = mysqli_fetch_assoc($resultStAP)){
foreach($rowStAP as $keyStAP => $valStAP){
$selected = $valStAP;
}
}
if ($valStAP != ""){
echo '<option selected name="StAP" value="' . $valStAP . '">' . $valStAP . '</option>';
}
echo '<option value="--">--</option>';
echo '<option value="am">am</option>';
echo '<option value="pm">pm</option>';
echo '</select></td></tr>';
/************* Query for End Date *****************/
$queryEndDt = mysqli_query($link, "SELECT EndDate FROM events WHERE id = " . $id);
while($rowEndDt = mysqli_fetch_assoc($queryEndDt)){
foreach($rowEndDt as $keyDesc => $valEndDt){
echo '<tr><td>Start Date: </td><td><input type="text" id="StartDate" name="StartDate" value="' . $valEndDt . '"></td></tr>';
}
}
/************* Query for End Hour *****************/
echo '<tr><td>End Hour</td><td><select name="EndHour" id="EndHour">';
$queryEndHr = mysqli_query($link, "SELECT TIME_FORMAT(EndTime, '%h') AS EndHour WHERE id = " . $id);
while ($rowEndHr = mysqli_fetch_assoc($resultEndHr)){
foreach($rowEndHr as $keyEndHr => $valEndHr){
$selectedEndHr = $valSEndHr;
}
}
if ($valEndHr == "" || $valEndHr == "null"){
echo '<option value="null">--</option>';
}
else {
echo '<option value="'.$valEndHr.'">' . $valEndHr . '</option>';
echo '<option value="null">--</option>';
}
$endmin = 0;
while($endmin < 13){
echo '<option value="'.$endmin.'">' . $endmin . '</option>';
$endmin = $endmin++;
}
echo '</select></td></tr>';
/************* Query for End Min ******************/
echo '<tr><td>Start Minute</td><td><select name="EndMin" id="EndMin">';
$queryEndMin = mysqli_query($link, "SELECT TIME_FORMAT(EndTime, '%m') AS EndMin WHERE id = " . $id);
while ($rowEndMin = mysqli_fetch_assoc($resultEndMin)){
foreach($rowEndMin as $keyEndMin => $valEndMin){
$selectedEndMin = $valEndMin;
}
}
if ($valEndMin == "" || $valEndMin == "null"){
echo '<option value="null">--</option>';
}
else{
if ($valEndMin < 10){
echo '<option value="0'.$valEndMin.'">0' . $valEndMin . '</option>';
echo '<option value="null">--</option>';
}
else {
echo '<option value="'.$valEndMin.'">' . $valEndMin . '</option>';
echo '<option value="null">--</option>';
}
}
$endmin = 0;
while($endmin < 60){
if ($endmin < 10){
echo '<option value="0'.$endmin.'">0' . $endmin . '</option>';
}
else {
echo '<option value="'.$endmin.'">' . $endmin . '</option>';
}
$endmin = $endmin +5;
}
echo '</select></td></tr>';
/************* Query for End AMPM *****************/
echo '<tr><td>End AM/PM</td><td><select name="EndAP" id="EndAP">';
$queryStAP = mysqli_query($link, "SELECT TIME_FORMAT(StartTime, '%p') AS EndAP WHERE id = " . $id);
while ($rowEndAP = mysqli_fetch_assoc($resultEndAP)){
foreach($rowEndAP as $keyEndAP => $valEndAP){
$selected = $valEndAP;
}
}
if ($valEndAP != ""){
echo '<option selected name="StAP" value="' . $valEndAP . '">' . $valEndAP . '</option>';
}
echo '<option name="EndAP" value="--">--</option>';
echo '<option name="EndAP" value="am">am</option>';
echo '<option name="EndAP" value="pm">pm</option>';
echo '</select></td></tr>';
/*************/
echo '</div>';
/************/
/************* Query for Place ********************/
$queryPlace = mysqli_query($link, "SELECT Place FROM events WHERE id = " . $id);
while($rowPlace = mysqli_fetch_assoc($queryPlace)){
foreach($rowPlace as $keyPlace => $valPlace){
echo '<tr><td>Place: </td><td><input type="text" id="Place" name="Place" value="' . $valPlace . '"></td></tr>';
}
}
/************** Query for Category *****************/
echo '<tr><td>Category</td><td><select name="category" id="category">';
$query2 = "SELECT Category FROM events WHERE id = " . $id;
$result2 = mysqli_query($link, $query2);
while ($row2 = mysqli_fetch_assoc($result2)){
foreach($row2 as $key2 => $val2){
$selected = $val2;
}
}
echo '<option name="none" value="">none</option>';
$queryCategory = "SELECT name FROM categories";
$result = mysqli_query($link, $queryCategory);
while($row1 = mysqli_fetch_assoc($result)){
foreach($row1 as $key1 => $val1){
if ($val1 != ""){
if ($val1 == $val2){
echo '<option selected name="' . $key . '" value="' . $val1 . '">' . $val1 . '</option>';
}
else {
echo '<option name="' . $key . '" value="' . $val1 . '">' . $val1 . '</option>';
}
}
}
}
echo '</select></td></tr>';
echo '<input type="hidden" name="id" value="' . $id . '" />';
echo '<tr><td><input type="submit" value="Save Changes" /></td></tr>';
echo "</table>";
echo "</form>";
對於這個問題，你肯定會做更多的查詢。我會修改它並嘗試爲你解釋它。給我幾分鐘。 – calcinai 2013-04-20 02:49:07
另外 - 檢查您的連接是否實際連接。你在哪裏定義$ link？ – calcinai 2013-04-20 03:03:35