javascript - 在 For 循环中将 PHP 变量存储到 JavaScript 变量中

Question

我知道如何将 PHP 变量逐一传递到 JavaScript 变量中，但现在我希望在 For 循环中传递一堆变量，但我卡住了。

<?php
        $m = new MongoClient();
        $db = $m->data_from_tweeter;
        $collection = $db->output;
        $cursor = $collection->find();
        foreach($cursor as $document){
            echo $document['place'] ;
            echo $document['fir'];
            echo $document['sec'];
        }
?>

我想将“place”存储为字符串变量，将“fir”和“sec”存储为两个 Num 变量，并使它们看起来像:

var num_1 {
    some_place : some_fir,
    some_place : some_fir,
    some_place : some_fir,
    ....
}

和

var num_2 {
    some_place : some_sec,
    some_place : some_sec,
    some_place : some_sec,
    ....
}

我怎样才能做到呢？提前致谢!

Answer 1

如果 $document['fir'] 和 $document['sec'] 是数组。你可以这样做

<?php
$m = new MongoClient();
$db = $m->data_from_tweeter;
$collection = $db->output;
$cursor = $collection->find();
$num1=array();
$num2=array();
foreach($cursor as $document){
    echo $document['place'] ;
    $num1 = json_encode ($document['fir']);
    $num2 = json_encode ($document['sec']);
}
?>

您可以使用 JSON 字符串作为 javascript 的对象

var num_1  = <?php echo $num1;?>
var num_2  = <?php echo $num2;?>