如何在php中没有提交按钮的情况下将输入类型值作为会话变量

时间:2016-11-11 11:52:43

标签: javascript php google-maps session-variables

我想从下拉菜单中选择特定地点的纬度和经度。我在网上找到了以下代码并且工作正常。但我想把这个纬度和经度作为SESSION VARIABLE,以便在更多页面中使用它。代码如下,

的index.php

<!doctyp html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Get Latitude and Longitude</title>
<script src="http://maps.google.com/maps/api/js?key=AIzaSyBygc-IYrYq3hz2Sy_1LoKFBxwDn7U_8iw&sensor=false&libraries=places&region=uk&language=en&sensor=true">
</script>
    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
</head>
<body>

Address:
<input id="searchTextField" type="text" size="50" style="text-align: left;width:357px;direction: ltr;">
<br><br>
            latitude:<input name="latitude" class="MapLat" value="" type="text" placeholder="Latitude" style="width: 161px;" disabled>
            longitude:<input name="longitude" class="MapLon" value="" type="text" placeholder="Longitude" style="width: 161px;" disabled>

    <div id="map_canvas" style="height: 350px;width: 500px;margin: 0.6em;"></div>




<script>
     $(function () {
         var lat = 44.88623409320778,
             lng = -87.86480712897173,
             latlng = new google.maps.LatLng(lat, lng),
             image = 'http://www.google.com/intl/en_us/mapfiles/ms/micons/blue-dot.png';

         //zoomControl: true,
         //zoomControlOptions: google.maps.ZoomControlStyle.LARGE,

         var mapOptions = {
             center: new google.maps.LatLng(lat, lng),
             zoom: 13,
             mapTypeId: google.maps.MapTypeId.ROADMAP,
             panControl: true,
             panControlOptions: {
                 position: google.maps.ControlPosition.TOP_RIGHT
             },
             zoomControl: true,
             zoomControlOptions: {
                 style: google.maps.ZoomControlStyle.LARGE,
                 position: google.maps.ControlPosition.TOP_left
             }
         },
         map = new google.maps.Map(('map_canvas'), mapOptions),
             marker = new google.maps.Marker({
                 position: latlng,
                 map: map,
                 icon: image
             });

         var input = document.getElementById('searchTextField');
         var autocomplete = new google.maps.places.Autocomplete(input, {
             types: ["geocode"]
         });

         autocomplete.bindTo('bounds', map);
         var infowindow = new google.maps.InfoWindow();

         google.maps.event.addListener(autocomplete, 'place_changed', function (event) {
             infowindow.close();
             var place = autocomplete.getPlace();
             if (place.geometry.viewport) {
                 map.fitBounds(place.geometry.viewport);
             } else {
                 map.setCenter(place.geometry.location);
                 map.setZoom(17);
             }

             moveMarker(place.name, place.geometry.location);
             $('.MapLat').val(place.geometry.location.lat());
             $('.MapLon').val(place.geometry.location.lng());
         });
         google.maps.event.addListener(map, 'click', function (event) {
             $('.MapLat').val(event.latLng.lat());
             $('.MapLon').val(event.latLng.lng());
             infowindow.close();
                     var geocoder = new google.maps.Geocoder();
                     geocoder.geocode({
                         "latLng":event.latLng
                     }, function (results, status) {
                         console.log(results, status);
                         if (status == google.maps.GeocoderStatus.OK) {
                             console.log(results);
                             var lat = results[0].geometry.location.lat(),
                                 lng = results[0].geometry.location.lng(),
                                 placeName = results[0].address_components[0].long_name,
                                 latlng = new google.maps.LatLng(lat, lng);

                             moveMarker(placeName, latlng);
                             $("#searchTextField").val(results[0].formatted_address);
                         }
                     });
         });

         function moveMarker(placeName, latlng) {
             marker.setIcon(image);
             marker.setPosition(latlng);
             infowindow.setContent(placeName);
             //infowindow.open(map, marker);
         }
     });
</script>
</body>
</html>

我不想在这个过程中使用SUBMIT BUTTON或OK BUTTON。如果没有任何按钮点击,我想将纬度和经度值设为SESSION VARIABLE。

请帮帮我。谢谢。

2 个答案:

答案 0 :(得分:0)

var lat = '44.88623409320778';
var lng = '-87.86480712897173';

  $.ajax({
    url: "script.php",
    type: "POST",
    data: { lat: lat, lng: lng }
  }).done( function( msg ) {
    // Complete
    })
  }).fail(function(jqXHR, textStatus) {
    alert("Request failed: " + textStatus + " - Please try again.")
  })

PHP脚本

$_SESSION[ 'lat' ] = $_POST[ 'lat' ];

使用ajax将lat和lng发送到php脚本,获取脚本将其存储为会话变量。

你需要jquery来完成这个。

答案 1 :(得分:-1)

获取纬度和经度值后,只需将它们存储在会话变量中,即可启动会话。您已经在存储javascript变量中的值存储会话中的值。