Question

我有一个遍历并收集数据的数组，但是我正在尝试将该变量作为另一个数组中的键重用，当我回显该变量时，它是一个字符串，但是当我在变量中使用它时它显示为空。

以$ value等于“ about”为例

订单布局数组输出

Array
(
    [1] => benefits
    [2] => services
    [3] => about
    [4] => team
    [5] => successstories
    [6] => cta_banner
    [7] => social
    [8] => 
    [9] => 
    [10] => 
    [11] => 
)

$ bp_theme_options数组变量

    $bp_theme_options['web_sec']['about']['show_row'] = "yes";
    $bp_theme_options['web_sec']['affiliates']['show_row'] = "yes";
    $bp_theme_options['web_sec']['benefits']['show_row'] = "yes";
    $bp_theme_options['web_sec']['blog']['show_row'] = "yes";
    $bp_theme_options['web_sec']['services']['show_row'] = "yes";
    $bp_theme_options['web_sec']['social']['show_row'] = "yes";
    $bp_theme_options['web_sec']['success_stories']['show_row'] = "yes";
    $bp_theme_options['web_sec']['team']['show_row'] = "yes";
    $bp_theme_options['web_sec']['cta_banner']['show_row'] = "yes";

错误的输出-$ contents_show为NULL

foreach ( $order_layout as $key => $value ) {
    if($value){
        var_dump($value) //returns 'about' string
        $contents_show = $bp_theme_options['web_sec'][$value]['show_row'];
        echo $contents_show;   //should return 'yes' returns NULL 
     }
 }

正确的输出-$ contents_show为“是”；

$contents_show = $bp_theme_options['web_sec']['about']['show_row'];

$ value返回

string(8) "about"

在另一个数组中使用变量作为键是否存在问题？如果我手动使用“关于”，它会成功获取变量。

Answer 1

就我而言，它正常工作。

$order_layout = array(0=>'benefits',1=>'services',2=>'about',3=>'team',4=>'success_stories',5=>'cta_banner',6=>'social',7=>'',8=>'',9=>'',10=>'');
$bp_theme_options['web_sec']['about']['show_row'] = "yes";
$bp_theme_options['web_sec']['affiliates']['show_row'] = "yes";
$bp_theme_options['web_sec']['benefits']['show_row'] = "yes";
$bp_theme_options['web_sec']['blog']['show_row'] = "yes";
$bp_theme_options['web_sec']['services']['show_row'] = "yes";
$bp_theme_options['web_sec']['social']['show_row'] = "yes";
$bp_theme_options['web_sec']['success_stories']['show_row'] = "yes";
$bp_theme_options['web_sec']['team']['show_row'] = "yes";
$bp_theme_options['web_sec']['cta_banner']['show_row'] = "yes";
foreach ( $order_layout as $key => $value ) {
    if ($value) {
        $contents_show = $bp_theme_options['web_sec'][$value]['show_row'];
        var_dump($contents_show . "<br>");   //should return 'yes' and returns 'yes'
    }
}

输出：

string 'yes<br>' (length=7)
string 'yes<br>' (length=7)
string 'yes<br>' (length=7)
string 'yes<br>' (length=7)
string 'yes<br>' (length=7)
string 'yes<br>' (length=7)
string 'yes<br>' (length=7)

您在$ order_layout和$ bp_theme_options中使用不同的名称（请检查successstories和success_stories）。也许您在$ order_layout中的“关于”名称中有多余的空格？

Answer 2

就我而言，完美地工作。

<?php
$bp_theme_options['web_sec']['about']['show_row'] = "yes";
$bp_theme_options['web_sec']['affiliates']['show_row'] = "yes";
$bp_theme_options['web_sec']['benefits']['show_row'] = "yes";
$bp_theme_options['web_sec']['blog']['show_row'] = "yes";
$bp_theme_options['web_sec']['services']['show_row'] = "yes";
$bp_theme_options['web_sec']['social']['show_row'] = "yes";
$bp_theme_options['web_sec']['success_stories']['show_row'] = "yes";
$bp_theme_options['web_sec']['team']['show_row'] = "yes";
$bp_theme_options['web_sec']['cta_banner']['show_row'] = "yes";

$order_layout = [ 1 =>'benefits', 2  =>'services', 3 =>'about', 4 =>'team', 5 =>'success_stories', 6 =>'cta_banner', 7 =>'social'];

foreach ( $order_layout as $key => $value ) {
    if($value){
        if(isset($bp_theme_options['web_sec'][$value]['show_row'])){
            $contents_show = $bp_theme_options['web_sec'][$value]['show_row'];
            if(isset($contents_show)){
               var_dump($contents_show.'--'.$value);
            }
        }
     }
}
?>

输出：

string(13) "yes--benefits" 
string(13) "yes--services" 
string(10) "yes--about" 
string(9) "yes--team" 
string(20) "yes--success_stories" 
string(15) "yes--cta_banner" 
string(11) "yes--social"

Answer 3

是否存储实际循环值的引用？

foreach ( $order_layout as $key => $value ) {
    if($value){
        var_dump($value) //returns 'about' string
        $value_ref = &$value;
        $contents_show = $bp_theme_options['web_sec'][$value_ref]['show_row'];
        echo $contents_show;   //should return 'yes' returns NULL 
     }
 }

在数组循环中将变量用作键的一部分-PHP

3 个答案: