Question

基本上，我想检查某个帖子是否属于特定类别，但就我的一生而言，我做错了什么。这是当前代码

$post_catz = wp_get_post_categories( $this->post->ID );
$catz = array();

foreach($post_catz as $c){
    $cat = get_category( $c );
    $catz[] = array( 'name' => $cat->name, 'slug' => $cat->slug );
    if ($catz['slug'] = 'featured') { 
        $colorslist = 'colorlistingfeat'; 
    }
}

$colorslist是我要更改的变量，如果帖子来自该特定类别。

Answer 1

if ($catz['slug'] = 'featured') { $colorslist = 'colorlistingfeat'; }

对于比较运算符，您必须使用==而不是=

http://php.net/manual/en/language.operators.comparison.php

希望获得帮助。

Answer 2

您的代码在检查数组时有错误。试试这个吧。

<?php
$post_catz = wp_get_post_categories(get_the_ID());
$catz = array();

foreach($post_catz as $c){
    $cat = get_category( $c );
    $catz[] = array( 'name' => $cat->name, 'slug' => $cat->slug );
}   

foreach($catz as $cs){
    if($cs['slug'] == 'featured') { 
        $colorslist = 'colorlistingfeat'; 
    }
}

echo $colorslist;
?>

但是请确保$this->post->ID返回帖子ID。

Answer 3

我相信这是因为您的代码$catz[] = array( 'name' => $cat->name, 'slug' => $cat->slug );。请注意，$catz[]是一个数组变量。因此，您应该以{{1}}的形式获取该标签，否则$catz[0]['slug]只会返回$catz的值。将代码编辑为Null

更好

还要注意您的if语句。应该是if（cond == cond）

检查帖子是否在循环之外的类别中

3 个答案: