检查SQL PHP上的两列是否匹配
我有一个表单,用户必须输入他们的预订id和姓氏。如果这两个值在数据库中匹配,那么我需要从数据库返回相应的值 我有两个文件,一个是使用ajax的html文件,另一个是php文件。单击按钮时,没有返回任何内容,我没有看到任何特定错误,并且我确信输入的值是正确的检查SQL PHP上的两列是否匹配,php,mysql,Php,Mysql,我有一个表单,用户必须输入他们的预订id和姓氏。如果这两个值在数据库中匹配,那么我需要从数据库返回相应的值 我有两个文件,一个是使用ajax的html文件,另一个是php文件。单击按钮时,没有返回任何内容,我没有看到任何特定错误,并且我确信输入的值是正确的 <script> var ajax = getHTTPObject(); function getHTTPObject() { var xmlhttp; if (window.XMLHttpRequest) {
<script>
var ajax = getHTTPObject();
function getHTTPObject()
{
var xmlhttp;
if (window.XMLHttpRequest) {
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
} else if (window.ActiveXObject) {
// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
} else {
//alert("Your browser does not support XMLHTTP!");
}
return xmlhttp;
}
function updateCityState()
{
if (ajax)
{
var reservation_id = document.getElementById("reservation_id").value;
var guest_last_name = document.getElementById("guest_last_name").value;
if(reservation_id)
{
var param = "?reservation_id=" + reservation_id + "&guest_last_name=" + guest_last_name;
var url = "test04.php";
ajax.open("GET", url + param, true);
ajax.onreadystatechange = handleAjax;
ajax.send(null);
}
}
}
function handleAjax()
{
if (ajax.readyState == 4)
{
var guest_full_name = document.getElementById('guest_full_name');
var unit_number = document.getElementById('unit_number');
var floor = document.getElementById('floor');
var key_sa = document.getElementById('key_sa');
if(!!ajax.responseText) {
var result = JSON.parse(ajax.responseText);
if(!!result){
guest_full_name.innerHTML = (!!result.guest_full_name) ? result.guest_full_name : '';
unit_number.innerHTML = (!!result.unit_number) ? result.unit_number : '';
floor.innerHTML = (!!result.floor) ? result.floor : '';
key_sa.innerHTML = (!!result.key_sa) ? result.key_sa : '';
}
}
}
}
</script>
<p id='employee_name'></p>
<p id='employee_age'></p>
<p id='safe_code'></p>
var ajax=getHTTPObject();
函数getHTTPObject()
{
var-xmlhttp;
if(window.XMLHttpRequest){
//IE7+、Firefox、Chrome、Opera、Safari的代码
xmlhttp=新的XMLHttpRequest();
}else if(window.ActiveXObject){
//IE6、IE5的代码
xmlhttp=新的ActiveXObject(“Microsoft.xmlhttp”);
}否则{
//警报(“您的浏览器不支持XMLHTTP!”);
}
返回xmlhttp;
}
函数updateCityState()
{
if(ajax)
{
var reservation\u id=document.getElementById(“reservation\u id”).value;
var guest\u last\u name=document.getElementById(“guest\u last\u name”).value;
如果(预订号)
{
var param=“?reservation_id=“+reservation_id+”&guest_last_name=“+guest_last_name;
var url=“test04.php”;
open(“GET”,url+param,true);
ajax.onreadystatechange=handleAjax;
send(null);
}
}
}
函数handleAjax()
{
if(ajax.readyState==4)
{
var guest_full_name=document.getElementById('guest_full_name');
var unit_number=document.getElementById('unit_number');
var floor=document.getElementById('floor');
var key_sa=document.getElementById('key_sa');
如果(!!ajax.responseText){
var result=JSON.parse(ajax.responseText);
如果(!!结果){
guest\u full\u name.innerHTML=(!!result.guest\u full\u name)?result.guest\u full\u name:“”;
unit_number.innerHTML=(!!result.unit_number)?result.unit_number:“”;
floor.innerHTML=(!!result.floor)?result.floor:“”;
key_sa.innerHTML=(!!result.key_sa)?result.key_sa:“”;
}
}
}
}
我的test04.php
<?php
$conn = mysqli_connect("","","","");
$reservation_id = mysqli_real_escape_string($conn, $_GET['reservation_id']);
$guest_last_name = mysqli_real_escape_string($conn, $_GET['guest_last_name']);
$query = "SELECT reservation_id, guest_full_name, guest_last_name unit_number, floor, key_sa FROM reservations2 INNER JOIN guest ON (reservations2.reservation_id=guest.reservation_idg) INNER JOIN unit USING (unit_id) where reservation_id ='".$reservation_id."'AND guest_last_name ='".$guest_last_name."";
$result = mysqli_query($conn, $query) or die(mysql_error());
$response = array();
if(mysqli_num_rows($result) > 0) {
while($row = mysqli_fetch_assoc($result)) {
$response['guest_full_name'] = ($row['guest_full_name'] != '') ? $row['guest_full_name'] : '';
$response['unit_number'] = ($row['unit_number'] != '') ? $row['unit_number'] : '';
$response['floor'] = ($row['floor'] != '') ? $row['floor'] : '';
$response['key_sa'] = ($row['key_sa'] != '') ? $row['key_sa'] : '';
}
}
echo json_encode($response, true);
?>
我没有看到任何具体的错误
- 你在找什么李>
- 您是否检查了PHP脚本的原始响应,或者只是查看了浏览器中呈现的内容李>
- 您是否验证了错误日志记录是否正常工作,是否检查了日志
我唯一的建议是使用预先准备好的语句来减少对mres
的需要,并提高安全性。@amina90如果您有新问题,请在花时间自己调试和研究之后,不要在这里问后续问题。@Rob,这个问题与上面的代码有关。我正在讨论使用上面提供的代码symcbean时遇到的错误。我也调试了我的代码,这就是我得到的错误。
<?php
$conn = mysqli_connect("","","","");
$response = array();
$reservation_id = mysqli_real_escape_string($conn, $_GET['reservation_id']);
$guest_last_name = mysqli_real_escape_string($conn, $_GET['guest_last_name']);
$query = "SELECT reservation_id, guest_full_name
, guest_last_name unit_number, floor, key_sa
FROM reservations2
INNER JOIN guest
ON (reservations2.reservation_id=guest.reservation_idg)
INNER JOIN unit USING (unit_id)
WHERE reservation_id ='".$reservation_id."'
AND guest_last_name ='".$guest_last_name."";
$result = mysqli_query($conn, $query);
if (!$result) {
$response['status']=503
$response['msg']="Error";
trigger_error(mysql_error());
finish($response);
exit;
}
$response['status']=200;
$response['msg']='OK';
$response['guest_full_name'] = htmlentities($_GET['guest_last_name']);
$response['reservations']=array();
while($row = mysqli_fetch_assoc($result)) {
$response['reservations'][]=array(
'unit_number'=>$row['unit_number'],
'floor'=>$row['floor'],
'key_sa'=>$row['floor_sa']);
}
}
finish($response);
exit;
function finish($response)
{
header("HTTP/1.1 $response[status] $response[msg]");
header("Content-type: application/json");
echo json_encode($response, true);
}