Question

我想做一个类别和子类别选择 - 所以当我按下一个类别时，它会在它旁边显示所有子类别。

我已经使它与html和js一起工作但现在我正在我的网站中进行dinamically

这就是我现在正在使用的

var categories_0 = [
    <?php while ( fanapom_has_categories() ) { ?>       


["<?php echo fanapom_category_id() ; ?>","<?php echo fanapom_category_name() ; ?>"], 
<?php } ?>
];




<?php while ( fanapom_has_categories() ) { ?>       
var categories_<?php echo fanapom_category_id() ; ?> = [<?php while ( fanapom_has_subcategories() ) { ?>["<?php echo fanapom_category_id() ; ?>","<?php echo fanapom_category_name() ; ?>"],<?php } ?>];

<?php } ?>

但我两次使用此代码 - 但我发现它只能运行一次。

 <?php while ( fanapom_has_categories() ) { ?>

如果我一个人使用

 var categories_0 = [
    <?php while ( fanapom_has_categories() ) { ?>       


["<?php echo fanapom_category_id() ; ?>","<?php echo fanapom_category_name() ; ?>"], 
<?php } ?>
];

或仅此一点

<?php while ( fanapom_has_categories() ) { ?>       
var categories_<?php echo fanapom_category_id() ; ?> = [<?php while ( fanapom_has_subcategories() ) { ?>["<?php echo fanapom_category_id() ; ?>","<?php echo fanapom_category_name() ; ?>"],<?php } ?>];

<?php } ?>

我得到正确的输出

但是当我把它们混合在一起时，我只得到第一个的输出，

如何让它能够为我提供正确的输出？我想我不应该两次使用这段代码

  <?php while ( fanapom_has_categories() ) { ?>

但我不确定如何将两者混合在一起 - 请帮助。

M O R E I N F O

这就是我希望输出看起来像

  var categories_0 = [
                            ["1", "maincategoryname"],
                            ["2", "maincategoryname"],
                            ["3", "maincategoryname"],
                            ["4", "maincategoryname"],
                            ["5", "maincategoryname"],
                            ["6", "maincategoryname"],
                            ["7", "maincategoryname"],
                            ["8", "maincategoryname"]
                        ];




                        var categories_1 = [
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"]
                        ];

                         var categories_2 = [
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"]
                        ];

 var categories_3 = [
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"]
                        ];

 var categories_4 = [
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"]
                        ];

 var categories_5 = [
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"]
                        ];

 var categories_6 = [
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"]
                        ];

 var categories_7 = [
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"]
                        ];

 var categories_8 = [
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"],
                            ["subcategoryid", "subcategoryname"]
                        ];

1 2 3 4 5 6 7 8个数字是主要的类别ID

Answer 1

以下是如何在您的示例中打印多维javascript数组，假设数据源是PHP中类似的多维数组：

$categories = array(
      "1" => array("one",   array("1" => "a", "2" => "b", "3" => "c"))
    , "2" => array("two",   array("4" => "d", "5" => "e", "6" => "f"))
    , "3" => array("three", array("7" => "g", "8" => "h", "9" => "i"))
);

$categories_js = 'var categories_0 = [';
$category_subs_js = '';
$delimiter1 = '';
$delimiter2 = '';
foreach ( $categories as $category_id => $category_info ) {
    $categories_js .= $delimiter1 . '["' . $category_id . '", "' . $category_info[0] . '"]';
    $delimiter1 = ', ';
    $category_subs_js .= 'var categories_' . $category_id . ' = [';
    foreach ( $category_info[1] as $subcat_id => $subcategory ) {
        $category_subs_js .= $delimiter2 . '["' . $subcat_id . '", "' . $subcategory . '"]';
        $delimiter2 = ', ';
    }
    $category_subs_js .= "];\n";
    $delimiter2 = '';
}
$categories_js .= "];\n";

echo $categories_js;
echo $category_subs_js;

Answer 2

您的fanapom_has_函数可能会耗尽迭代器，这会阻止您第二次获取列表。（原因＃422835为什么可变的全球状态是邪恶的，顺便说一句。如果你有选择，我建议你减少对它的依赖。仅仅因为WordPress这样做，并不意味着它＆＃39;一个好主意。）

为了解决这个问题，您需要以某种方式重置迭代器，或者同时为主类别和每个子类别构建数组（因此您只需要通过列表一次）。 / p>

坦率地说，你可以通过手工构建JSON来放弃放屁。：P PHP有一个内置函数json_encode来做到这一点。您所要做的就是构建数组。你可以一次性完成。

也许像

<?php
$categories = [ [] ];
while (fanapom_has_categories()) {
    $id = fanapom_category_id();
    $categories[0][] = [ "$id", fanapom_category_name() ];
    $categories[$id] = [];
    while (fanapom_has_subcategories()) {
        # btw, this looks odd to me, using the same function to get info on the
        # category and subcategory, but using different functions to iterate through
        # the respective lists.
        $categories[$id][] = [ fanapom_category_id(), fanapom_category_name() ];
    }
}

foreach ($categories as $id => $subcategories) {
    echo "var categories_$id = ", json_encode($subcategories), ";\n";
}

?>

（注意：[ item1, item2 ]是PHP 5.4 spiff。如果您仍然使用旧的和已破坏的PHP版本，请改用array(item1, item2)。）

PHP重复功能未显示 - 语法错误

2 个答案: