我不完全确定为什么这出现在我的网站页面?我看了一下代码，但那一行似乎没有错。
这行是array_push行有些人说这是因为$taxonomy不是数组?但我真的不确定是什么问题。
网页截图
下面是php文件:
<?php
/*
Template Name: Portfolio
*/
?>
<?php get_header(); ?>
<?php
// Add. Options Variables
$portfolio_opts = get_post_meta(get_the_ID(), 'portfolio_additional_options', true);
$is_filtration = is_array($portfolio_opts) && in_array('is_filtration', $portfolio_opts) ? true : false;
$is_masonry = is_array($portfolio_opts) && in_array('is_masonry', $portfolio_opts) ? 'true' : 'false';
// Taxonomy Variables
$taxonomy = 'portfolio_category';
$taxonomy_term_ID = get_post_meta(get_the_ID(), $taxonomy, true);
$taxonomy_terms = get_terms( $taxonomy, array(
'child_of' => $taxonomy_term_ID,
'hide_empty' => 0,
'fields' => 'ids',
) );
array_push($taxonomy_terms, $taxonomy_term_ID); // add parent category to list
// WP_QUERY Arguments
$portfolio_args = array(
'post_type' => 'portfolio',
'tax_query' => array(
array(
'taxonomy' => $taxonomy,
'field' => 'id',
'terms' => $taxonomy_terms
),
),
'posts_per_page' => -1
);
$portfolio_query = new WP_Query($portfolio_args);
?>
<!-- BEGIN: SITE BODY -->
<section id="site-body" class="sections portfolio padding-size-l">
<div class="container">
<?php if ( $is_filtration ) { ?>
<!-- BEGIN: FILTERATION -->
<div class="filters-wrap">
<ul class="filters nostyle">
<li><a data-filter="*" class="active"><?php esc_html_e('All', 'lamark'); ?></a></li>
<?php wp_list_categories(array('child_of' => $taxonomy_term_ID, 'title_li' => '', 'style' => 'none', 'taxonomy' => $taxonomy, 'show_option_none' => '', 'walker' => new Lamark_Walker_Portfolio_Filter())); ?>
</ul>
</div>
<!-- END: FILTERATION -->
<?php } ?>
<!-- BEGIN: PORTFOLIO GRID -->
<section class="grid clearfix" data-col="<?php echo get_post_meta(get_the_ID(), 'portfolio_columns', true); ?>" data-margin="25" data-height="0.8" data-double-height="1.6" data-masonry="<?php echo $is_masonry; ?>">
<?php if ( $portfolio_query->have_posts() ) : while ( $portfolio_query->have_posts() ) : $portfolio_query->the_post(); ?>
<?php get_template_part( 'parts/portfolio-index-entry.inc' ); ?>
<?php endwhile; else: ?>
<p class="entry"><?php printf( esc_html__( 'Ready to publish your first entry? <a href="%1$s">Get started here</a>.', 'lamark' ), esc_url( admin_url() ) ); ?></p>
<?php endif; ?>
</section>
<!-- END: PORTFOLIO GRID -->
</div>
</section>
<!-- END: SITE BODY -->
<?php get_footer(); ?>
文档说明get_terms() "如果任何$分类法不存在，将返回WP_Error "。
您可以测试$taxonomy_terms以确保它是一个数组，如果不打印它是什么，也许像这样:
if (! is_array($taxonomy_terms)) {
// show the issue
die('<pre>'.print_r($taxonomy_terms, 1));
} else {
// okay, no issue with that array...continue
array_push($taxonomy_terms, $taxonomy_term_ID); // add parent category to list
}