[英]When a user clicks a button on page 1 it sends data to page 2 and redirects to page 3
1-用户在page1.php的文本字段(表单)中输入信息,然后单击“提交”按钮;
<Form name="search_form" method="POST" action="page2.php">
<input type="text" name="search_box" class="btn btn-default" value="" />
<input type="submit" name="search" class="btn btn-default" value="Search location">
</form>
<br>
2-用户在page1.php中输入的信息将发送到page2.php,在这里我用它在数据库中进行查询并将其保存在xml文件中。
<?php
require("phpsqlajax_dbinfo.php");
$dom = new DOMDocument("1.0");
$node = $dom->createElement("markers");
$parnode = $dom->appendChild($node);
$connection=mysql_connect ('localhost', $username, $password);
if (!$connection) { die('Not connected : ' . mysql_error());}
$db_selected = mysql_select_db($database, $connection);
if (!$db_selected) {
die ('Can\'t use db : ' . mysql_error());
}
if (isset($_POST['search'])){
$search_term = mysql_real_escape_string($_POST['search_box']);
$query = "SELECT * FROM markers WHERE area= '{$search_term}' OR county = '{$search_term}' OR name = '{$search_term}' OR road = '{$search_term}' ORDER BY petrol ASC";
}
$result = mysql_query($query);
if (!$result) {
die('Invalid query: ' . mysql_error());
}
header("Content-type: text/xml");
while ($row = @mysql_fetch_assoc($result)){
$node = $dom->createElement("marker");
$newnode = $parnode->appendChild($node);
$newnode->setAttribute("id",$row['id']);
$newnode->setAttribute("name",$row['name']);
$newnode->setAttribute("address",$row['address']);
$newnode->setAttribute("lat",$row['lat']);
$newnode->setAttribute("lng",$row['lng']);
}
echo $dom->saveXML();
?>
到目前为止一切都很好!
现在,我需要将用户重定向到page3.php,在该页面中,用户在page1.php中输入,过滤并保存在page2.php中的信息将被加载到page3.php的地图上。
问题:如果我在page2.php中使用header(“ Location:page3.php”),则用户将重定向到page3.php,但是我从page2.php的查询中的信息似乎未执行/保存,并且未加载page3.php。
如果我在page3.php的代码中使用了另一个xml文件,那么它将起作用。因此,我得出的结论是我的问题在page2.php中。
Page3.php
<script type="text/javascript">
var customIcons = {
gas_station: {
icon: '/icon.png'
},
};
function load() {
var map = new google.maps.Map(document.getElementById("map"), {
center: new google.maps.LatLng(53.349535, -6.262184),
zoom: 10,
mapTypeId: 'roadmap'
});
var infoWindow = new google.maps.InfoWindow;
// Change this depending on the name of your PHP file
downloadUrl("page2.php", function(data) {
var xml = data.responseXML;
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
var name = markers[i].getAttribute("name");
var address = markers[i].getAttribute("address");
var convenience = markers[i].getAttribute("convenience");
var atm = markers[i].getAttribute("atm");
var point = new google.maps.LatLng(
parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
var html = "<b>Station: </b>" + name + "<br/><b>Address: </b>" + address;
var icon = customIcons[type] || {};
var marker = new google.maps.Marker({
map: map,
position: point,
icon: icon.icon
});
bindInfoWindow(marker, map, infoWindow, html);
}
});
}
function bindInfoWindow(marker, map, infoWindow, html) {
google.maps.event.addListener(marker, 'click', function() {
infoWindow.setContent(html);
infoWindow.open(map, marker);
});
}
function downloadUrl(url, callback) {
var request = window.ActiveXObject ?
new ActiveXObject('Microsoft.XMLHTTP') :
new XMLHttpRequest;
request.onreadystatechange = function() {
if (request.readyState == 4) {
request.onreadystatechange = doNothing;
callback(request, request.status);
}
};
request.open('GET', url, true);
request.send(null);
}
function doNothing() {}
</script>
无论如何,当用户单击page1.php中的Submit时,信息将发送到page2.php,并且用户也将自动重定向到page3.php。
先感谢您!
以下是使用localStorage的一个非常基本的实现:
小提琴 。
注意: Stackoverflow不允许访问localStorage,因此请在JSFiddle上进行测试。
function saveToLocalStorage() { var value = document.getElementById("txt").value; console.log(value); localStorage.setItem("myValue", value); } function getFromLocalStorage(){ console.log(localStorage.getItem("myValue")); }
<input type="text" id="txt"> <button onclick="saveToLocalStorage()">Save</button> <button onclick="getFromLocalStorage()">Get</button>
我假设您正在发送非敏感信息...您始终可以通过GET方法从第2页发送信息到第3页,并在第3页接收信息。
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