Question

我在javascript中有一个地图代码，它根据纬度和经度显示标记，我在脚本中有一个功能，通过该功能为地图提供纬度和经度。

function GetValues() 
    {
        contentstring[0] = "Sector 40 Chandigarh, India";
        regionlocation[0] = "30.739444,76.737981";

        contentstring[1] = "sector 30 chandigarh, India";
        regionlocation[1] = "30.716292,76.787029";
    }

我想要做的是从数据库中获取值并在此函数中打印它，为此我得到了一个数组。这是在下面给出的。来自以下代码

echo "<pre>";
print_r($rows);
echo "</pre>";  


Array
(
    [0] => Array
        (
            [id] => 25
            [stop] => sec 40d Chandigarh
            [latitude] => 30.7363831
            [longitude] => 76.7309729
        )

    [1] => Array
        (
            [id] => 26
            [stop] => sec 53 Chandigarh
            [latitude] => 30.7163083
            [longitude] => 76.7284448
        )

    [2] => Array
        (
            [id] => 27
           [stop] => sec 60 Chandigarh
            [latitude] => 30.7122544
            [longitude] => 76.7206652
        )

)

我试图循环这个数组并将值放在函数中但它没有用。任何人都可以告诉你该怎么做。

我试过的代码是

function GetValues() {
        //contentstring[0] = "Sector 40 Chandigarh, India";
        //regionlocation[0] = "30.739444,76.737981";
        <? 
        for($i=0;$i<count($rows); $i++)
        {?>
            contentstring[<? echo $i; ?>]
        <?}?> 
        = 
        <?foreach($rows as $row4) 
            {
                contentstring[1] = '<? echo $row4['stop']; ?>';
                regionlocation[1] = "<? echo $row4['latitude']; echo ","; echo $row4['longitude']; ?>";
            <?}?>
    }

Answer 1

我建议您使用JSON - 从数据库中获取值，然后使用json_encode创建要在javascript函数中使用的json对象。

/* echo the results as a javascript variable */
<script type='text/javascript'>
<?php
    echo "var json=".json_encode( $rows ).";";
?>
</script>

/*
    which would yield something like
*/
<script type='text/javascript'>
var json={
    {"id":"25","stop":"sec 40d Chandigarh","latitude":"30.7363831","longitude":"76.7309729"},
    {"id":"26","stop":"sec 53 Chandigarh","latitude":"30.7163083","longitude":"76.7284448"},
    {"id":"27","stop":"sec 60 Chandigarh","latitude":"30.7122544","longitude":"76.7206652"}
};


function GetValues() {
    if( typeof( json )!='undefined' && typeof( json )=='object' ){
        for( var n in json ){
            var record=json[ n ];
            var contentstring=record['stop'];/* stop is a reserved word in javascript! */
            var regionlocation={ lat:record.latitude, lng:record.longitude };

            /* Add the marker to the map - pseudo code */
            map.addMarker( contentstring, regionlocation );
        }
    }
}

</script>

将标记放在地图上

1 个答案: