致命错误：未捕获错误：对未定义函数的调用是_product（）

Question

在将我的生产WordPress相关网站导入到我的本地Xampp环境后，我得到了这个错误：

致命错误：未捕获错误：在C:\xampp\htdocs\public\u html\siliconharvest\wp content\themes\storefront child\functions.php:62堆栈跟踪：#0 C:\xampp\htdocs\public\u html\siliconharvest\wp includes\class wp hook.php（286）：wc_变量\u简单条件（“”）#1c:\xampp\htdocs\public\uhtml\siliconharvest\wp includes\class wp hook.php（310）：wp_hook-

我尝试了以下诊断步骤，但对错误没有影响：

1. 禁用所有插件，包括与产品相关的插件（Woocommerce）
2. 重新命名storefront child\functions.php文件（暂时禁用它）
3. 已将模板更改为其他内容，而不是store front child

然而，不管上述步骤如何，错误仍然存在。正确的解决方案必须消除所有这些错误。

编辑：错误中引用的functions.php文件的第1-73行：

<?php
// BEGIN Remove "Storefront Designed by WooThemes" from Footer as per https://danielsantoro.com/remove-storefront-designed-woothemes/
add_action('init', 'custom_remove_footer_credit', 10);
function custom_remove_footer_credit()
{
    remove_action('storefront_footer', 'storefront_credit', 20);
    add_action('storefront_footer', 'custom_storefront_credit', 20);
}

function custom_storefront_credit()
{
?>
    <div class="site-info">
<div class="deferred-menu-items">
<ul style="list-style-type: none;" class="footer-menu">
<li style="display:inline-block" class="menu-item-156"><a href="/about/">About Us</a></li><!--
--><li style="display:inline-block" class="menu-item-189"><a href="/faq/">FAQ</a></li><!--
--><li style="display:inline-block" class="fa-delivery"><a href="/delivery/">Delivery</a></li><!--
--><li style="display:inline-block" class="fa-returns"><a href="/returns/">Returns</a></li><!--
--><li style="display:inline-block" class="menu-item-464"><a href="/store-policies/"><i class="far fa-handshake"></i> Store Policies</a></li><!--
--><!--<li style="display:inline-block" class="menu-item-1024"><a href="/articles/">Articles</a></li>--><!--
--><li style="display:inline-block" class="affiliates"><a href="/about-the-silicon-harvest-affiliates-program/"><i class="fas fa-bullhorn"></i> Affiliates Programme</a></li>
<!--<li style="display:inline-block" class="fa-opas"><a href="/overseas-parts-acquisition-service-opas/">Overseas Parts Acquisition Service (OPAS)</a></li>-->
</ul>
</div>
        &copy; <?php
    echo get_bloginfo('name') . ' ' . get_the_date('Y') . ' | ABN: 31 022 705 565 | <a style="color:blue" href="/terms-of-service-and-privacy-policy/">Terms of Service/Privacy Policy</a> <div class="front-page-contact">
<a style="color:blue" href="/contact-us/#aggs-contact-form">Contact Form</a> | mob: [phone] | tel: [phone] <!--| mob: [phone] (international) / tel: [phone] -->| <a style="color:blue" href="mailto:[e-mail]">[e-mail]</a><br />Live contact hours from 9am-9pm (AEST/AEDT or Sydney/Melbourne/ACT/TAS time), Mon-Sun</div>';
?>
    </div><!-- .site-info -->
    <?php
}
// END Remove "Storefront Designed by WooThemes" from Footer

/* START add microdata relating to item condition to satisfy Google Merchant's optional advice - as per https://github.com/woocommerce/woocommerce/issues/15797#issuecomment-355744594 */
add_filter('woocommerce_structured_data_product_offer', 'filter_woocommerce_structured_data_product', 10, 2);

/**
 * Add properties to the http://schema.org/Offer markup for all products.
 */
function filter_woocommerce_structured_data_product($markup, $product)
{
    /* By default, we assume all products sold in the ecommerce are in new condition */
    if (empty($markup['itemCondition'])) {
        $markup['itemCondition'] = 'http://schema.org/NewCondition';
    }
    return $markup;
}
/* END add microdata */


// as per https://wordpress.stackexchange.com/questions/276941/woocommerce-add-extra-field-to-variation-product/277556 
// based on http://www.remicorson.com/woocommerce-custom-fields-for-variations/ 

//THESE ACTIONS AND FILTER HANDLE YOUR PRODUCT VARIATION FIELDS + add_filter( 'woocommerce_available_variation', 'load_variation_settings_fields' ); which you have inserted into a conditional
add_action('woocommerce_product_after_variable_attributes', 'variation_settings_fields', 10, 3);
add_action('woocommerce_save_product_variation', 'save_variation_settings_fields', 10, 2);

add_action('wp_head', 'wc_variable_simple_conditions');
function wc_variable_simple_conditions()
{
    if (is_product()) {
        global $post;
        $post_id = $post->ID;
        $product = wc_get_product($post_id);
        $type    = $product->get_type();
        if ($type == 'variable') {
            add_filter('woocommerce_available_variation', 'load_variation_settings_fields');
        } elseif ($type == 'simple') {
            add_action('woocommerce_single_product_summary', 'custom_data_above_add_to_cart_button', 41);
        }
    }
}

如果（is_product（））{是第62行，则该行为if。




Answer 1

试着用这个替换你的函数：

function wc_variable_simple_conditions()
{
    if ( !function_exists( 'is_product' ) ) {
        return;
    }
    if (is_product()) {
        global $post;
        $post_id = $post->ID;
        $product = wc_get_product($post_id);
        $type    = $product->get_type();
        if ($type == 'variable') {
            add_filter('woocommerce_available_variation', 'load_variation_settings_fields');
        } elseif ($type == 'simple') {
            add_action('woocommerce_single_product_summary', 'custom_data_above_add_to_cart_button', 41);
        }
    }
}

Answer 2

确保您include此函数的源includes/wc条件函数.php

http://woocommerce.wp-a2z.org/oik_api/is_product/

Answer 3

首先检查是否已激活，然后调用功能：

add_action('wp_head', 'wc_variable_simple_conditions');
function wc_variable_simple_conditions(){
    if (!class_exists('WooCommerce')) return; // add this line
    if (is_product()) {
        global $post;
        $post_id = $post->ID;
        $product = wc_get_product($post_id);
        $type    = $product->get_type();
        if ($type == 'variable') {
            add_filter('woocommerce_available_variation', 'load_variation_settings_fields');
        } elseif ($type == 'simple') {
            add_action('woocommerce_single_product_summary', 'custom_data_above_add_to_cart_button', 41);
        }
    }
}