Question

您好我正在尝试在我的网站中使用地理数据，而我无法动态提取餐馆的地址并将其放入我的javascript中。我正在使用get方法从网址中提取restaurant_id，然后使用它来提取餐厅的完整地址。这是我遇到问题的代码行（var destinationAddress）：

$con=mysqli_connect("root","");
        $rest_id2=$_GET['id'];
        $rest_id=(int)$rest_id2;
        $sql="SELECT * from restaurant WHERE restaurant_id='".$rest_id."'";
        $result=mysqli_query($con,$sql);
        $rows=mysqli_fetch_assoc($result);
?>
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?sensor=true"></script>
<script>
$(document).ready(function() {

    //exit early if no geolocation
    if(!navigator.geolocation) return;

    var destinationAddress = "<?php echo $rows['address'].$rows['city'].$rows['state'].$rows['zip']; ?>";
</script>
</head>
....

任何人都知道我在这里做错了吗？

Answer 1

尝试添加逗号和空格。

var destinationAddress = "<?php echo $rows['address'].$rows['city'].$rows['state'].$rows['zip']; ?>";

Answer 2

因为忘记关闭函数})，请尝试

<script>
$(document).ready(function() {

    //exit early if no geolocation
    if(!navigator.geolocation) return;

    var destinationAddress = "<?php echo $rows['address'].$rows['city'].$rows['state'].$rows['zip']; ?>";
})
</script>

Answer 3

让您的生活更轻松：在模板之外构建目标地址：

private string GetTextFromPage(PdfReader pdfReader, int page)
{
     StringBuilder pageText = new StringBuilder();
     var cpage = pdfReader.GetPageN(page);
     var content = cpage.Get(PdfName.CONTENTS);

     //Error for casting Pdfarray to PRIndirectReference
     var indirectReference = (PRIndirectReference)content;
}

然后简单地

$rows=mysqli_fetch_assoc($result);
if( $rows !== NULL )
{
    $destinationAddress = "{$rows['address']}, {$rows['city']}, {$rows['state']}, {$rows['zip']}";
}
else
{
    // no rows! (anomaly)
    $destinationAddress = "no destination address available";
}

// due to the way you'll later inject the variable
// into JavaScript code double quotes must be escaped

$destinationAddress = str_replace( '"', '\"', $destinationAddress );

如何在Javascript中连接多个php变量

3 个答案: