dth20986
2017-11-25 07:49
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如何传递ajax返回值php变量

i know this question is asked many times, but non of them having right solution. i am using ajax to get the response from PHP Page. After getting the response i want to use the value in PHP variable. Below code is getting result but i am confused with the usage of it.

below is my index.php

function getLocation() {
     if(navigator.geolocation) {
    navigator.geolocation.getCurrentPosition(geoSuccess, geoError);
        } else {
            alert("Geolocation is not supported by this browser.");
        }
    }

    function geoSuccess(position) {
        var glat = position.coords.latitude;
        var glng = position.coords.longitude;
        //alert("lat:" + glat + " lng:" + glng);
        geocoding(glat,glng);
      }

    function geoError() {
        alert("Geocoder failed.");
    }
    function geocoding(glat,glng){
        $.ajax({
        type:'POST',
        url:'geolocation.php',
        data:'latitude='+glat+'&longitude='+glng,
        success:function(result){
            if(result){
               $("#locationg").val(result);
               $("#htmllocation").html(result);
           }
        }
    });
   }

geolocation.php

<?php
session_start();
if(!empty($_POST['latitude']) && !empty($_POST['longitude'])){
    //Send request and receive json data by latitude and longitude
    $url = 'http://maps.googleapis.com/maps/api/geocode/json?latlng='.trim($_POST['latitude']).','.trim($_POST['longitude']).'&sensor=false';
    $json = @file_get_contents($url);
    $data = json_decode($json);
    $status = $data->status;
    if($status=="OK"){
        //Get address from json data
        $location = $data->results[0]->formatted_address;
        //$location = $data->results[0]->address_components;

        for($j=0;$j<count($data->results[0]->address_components);$j++){
               $cn=array($data->results[0]->address_components[$j]->types[0]);
           if(in_array("locality", $cn))
           {
            $city= $data->results[0]->address_components[$j]->long_name;
           }
            }

     }else{
        echo 'No Location';
    }

    echo $city;
}
?>

index.php

<?php
    $city='<span id="htmllocation"></span>';
?>

when i echo $city i am getting city name but in inspect elements its showing like

<span id="htmllocation">Visakhapatnam</span>

issue is that i can not use this in MYSQL because it in html format, and i just want to get only the city name nothing else.

i hope my issue is clear, please leave a comment if not clear.

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