Question

我在使用PHP时遇到了json数组数据的问题。我使用foreach循环数据，只捕获第一个[标签]列表。未捕获数组索引1和更大的所有内容。

在包含的json中，$keywordfilters将回显：

来自指数0的“Google，情报，新闻稿，领导力”。

“领导力，新闻稿”将不会从索引1中删除。

请帮忙。

PHP：

// Keyword Filters
echo '<div class="sub-nav" role="menu">';

// Loop to get all keywords for filtering
$recordcounter = 0;
foreach($json->items as $jsondata){

    $keywordfilters = '<strong style="margin: 0 3px 3px; padding: 3px 10px 3px 0; display: block;">Filter:</strong> <a href="#" role="menuitem" class="active" style="margin: 0 3px 3px; padding: 3px 10px 3px 0; display: block; float: left;">All</a>';

    $keywordcounter = 0;
    foreach($jsondata->labels as $keywordlabels){
        //foreach($keywordlabels as $labels){
            //strtolower,strtoupper,ucfirst,lcfirst
            $keywordfilters .= '<a href="#" role="menuitem" style="margin: 0 3px 3px; padding: 3px 10px 3px 0; display: block; float: left;">' . ucfirst($keywordlabels) . '</a>';

            $keywordcounter++;
        //}
    }

    $recordcounter++;
}

echo $keywordfilters;

echo '</div>';

JSON：

Answer 1

在每个外环中： $ keywordfilters正在重置。

    $keywordfilters = '<strong style="margin: 0 3px 3px; padding: 3px 
    10px 3px 0; display: block;">Filter:</strong> <a href="#" 
    role="menuitem" class="active" style="margin: 0 3px 3px; padding: 
    3px 10px 3px 0; display: block; float: left;">All</a>';

您需要使用。=来追加以前数组的数据。

    $keywordfilters .= '<strong style...

Answer 2

试试这个，希望这会帮助你。问题是这个

$keywordfilters = '<strong style="margin: 0 3px 3px; padding: 3px 10px 3px 0; display: block;">Filter:</strong> <a href="#" role="menuitem" class="active" style="margin: 0 3px 3px; padding: 3px 10px 3px 0; display: block; float: left;">All</a>';

您在foreach循环中使用此语句，每次都会覆盖它。

PHP代码：

<?php
ini_set('display_errors', 1);
$string = '{ "kind" :"blogger#postList", "nextPageToken" :"CgkIChiA48Lo_igQg4DLkK7p2Kke", "items" : { "0" : { "kind" :"blogger#post", "id" :"a123456789", "content" :"TESTESTEST", "author" : { "id" :"sro5t7y4nte76vtcmhsazsdffsdy", "displayName" :"MyDisplayName", "url" :"https://www.blogger.com/profile/a1234567890", "image" : { "url" :"//lh6.googleusercontent.com/-3HzpopblNls/AAAAAAAAAAI/AAAAAAAADC8/YJsx2U5TQ9I/s35-c/photo.jpg"}}, "labels" : { "0" :"Google", "1" :"intelligence", "2" :"press release", "3" :"leadership"}}, "1" : { "kind" :"blogger#post", "id" :"b123456789", "content" :"TESTESTEST", "author" : { "id" :"sro5t7y4nte76vtcmhsazsdffsdy", "displayName" :"MyDisplayName", "url" :"https://www.blogger.com/profile/a1234567890", "image" : { "url" :"//lh6.googleusercontent.com/-3Hz321blBls/AAABBBABACAAAI/AACCC76AADC8/YJsx2U5TQ9I/s35-c/photo.jpg"}}, "labels" : { "0" :"leadership", "1" :"press release"}}}, "etag" :"rone8ryudb8ditsvmp8re8dt/oprdnyt75GRFYTUiofygjlhft8y" }';
$json=json_decode($string);
echo '<div class="sub-nav" role="menu">';

// Loop to get all keywords for filtering
$recordcounter = 0;
$keywordfilters = '<strong style="margin: 0 3px 3px; padding: 3px 10px 3px 0; display: block;">Filter:</strong> <a href="#" role="menuitem" class="active" style="margin: 0 3px 3px; padding: 3px 10px 3px 0; display: block; float: left;">All</a>';
foreach($json->items as $jsondata){


    $keywordcounter = 0;
    foreach($jsondata->labels as $keywordlabels){
        //foreach($keywordlabels as $labels){
            //strtolower,strtoupper,ucfirst,lcfirst
            $keywordfilters .= '<a href="#" role="menuitem" style="margin: 0 3px 3px; padding: 3px 10px 3px 0; display: block; float: left;">' . ucfirst($keywordlabels) . '</a>';

            $keywordcounter++;
        //}
    }

    $recordcounter++;
}

echo $keywordfilters;

如何访问json数组中的所有[标签]

2 个答案: