Wordpress 通知：未定义的变量

问题描述

有人可以帮我解决这个问题。

我的代码中似乎存在一些 PHP 错误，其中未设置索引变量。我该如何解决？

关于.PHP代码

<?PHP
    // Template Name: About
?>

<?PHP get_header();?>

<?PHP if(have_posts()): ?>
    <?PHP while(have_posts()): the_post(); ?>
        <?PHP
            $args = array(
                'post_parent' => $post->ID,'post_type'   => 'page','numberposts' => -1,'post_status' => 'publish','orderby' => 'menu_order','order' => 'ASC',);
            $subPages = get_children( $args );
            $benefits = get_posts(array(
                'post_type' => 'benefit','numberposts' => 3,));
            $members = get_posts(array(
                'post_type' => 'member',));
        ?>
        <main class="content">
            <section class="about parallax">
                <div data-depth="0.30" class="about-bg-mob-1 layer layer-mob"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/benefits-img.svg" alt=""/></div>
                <div data-depth="0.60" class="about-bg-mob-2 layer layer-mob"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-6.svg" alt=""/></div>
                <div data-depth="0.40" class="about-bg-mob-3 layer layer-mob"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-6.svg" alt=""/></div>
                <div data-depth="0.30" class="about-bg-mob-4 layer layer-mob"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-3.svg" alt=""/></div>
                <div data-depth="0.70" class="about-bg-mob-5 layer layer-mob"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-4.svg" alt=""/></div>
                <div data-depth="0.20" class="about-bg-1 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-1.svg" alt=""/></div>
                <div data-depth="0.30" class="about-bg-2 layer"><img src="<?=TDIR?>/assets/dist/s/images/tmp_file/small-img-5.png" alt=""/></div>
                <div data-depth="0.40" class="about-bg-3 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-2.svg" alt=""/></div>
                <div data-depth="0.70" class="about-bg-10 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-6.svg" alt=""/></div>
                <div data-depth="0.70" class="about-bg-11 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-3.svg" alt=""/></div>
                <div class="container">
                    <div data-depth="0.50" class="about-bg-4 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-3.svg" alt=""/></div>
                    <div data-depth="0.60" class="about-bg-5 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-4.svg" alt=""/></div>
                    <div data-depth="0.70" class="about-bg-6 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-6.svg" alt=""/></div>
                    <?PHP if (!empty($subPages)): ?>
                        <?PHP foreach ($subPages as $page): ?>
                            <div class="row <?PHP if ( ($index + 1) == count($subPages)): ?> mb-160 <?PHP else: ?> mb-37 <?PHP endif ?>">
                                <?PHP if ($index == 1): ?>
                                    <div data-depth="0.30" class="about-bg-mob-6 layer layer-mob"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/customer-bg-3.svg" alt=""/></div>
                                    <div data-depth="0.50" class="about-bg-mob-7 layer layer-mob"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/h-img.svg" alt=""/></div>
                                    <div data-depth="0.40" class="about-bg-mob-8 layer layer-mob"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-8.svg" alt=""/></div>
                                    <div data-depth="0.60" class="about-bg-7 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/customer-bg-3.svg" alt=""/></div>
                                    <div data-depth="0.70" class="about-bg-8 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/h-img.svg" alt=""/></div>
                                    <div data-depth="0.70" class="about-bg-9 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-8.svg" alt=""/></div>
                                <?PHP endif ?>
                                <div class="col-md-7 <?PHP if ($index % 2 == 0): ?> col-md-push-5 col-sm-12 col-sm-push-0 <?PHP endif ?> ">
                                    <div class="about-img <?PHP if ($index % 2 != 0): ?> right <?PHP endif ?>">
                                        <?PHP if (has_post_thumbnail($page->ID)): ?>
                                            <img <?PHP if ($index % 2 == 0): ?> style="float: right;" <?PHP endif ?> src="<?=get_the_post_thumbnail_url($page->ID,'full')?>" alt=""/>
                                        <?PHP endif ?>
                                    </div>
                                </div>
                                <div class="col-md-5 <?PHP if ($index % 2 == 0): ?> col-md-pull-7 col-sm-12 col-sm-pull-0 <?PHP endif ?>">
                                    <div class="about-txt <?PHP if ($index % 2 != 0): ?> right <?PHP endif ?>">
                                        <div class="about-txt__h font-1">
                                            <h3><?=__($page->post_title)?></h3>
                                        </div>
                                        <div class="about-txt__desc font-2">
                                            <p><?=__($page->post_content)?></p>
                                        </div>
                                    </div>
                                </div>
                            </div>
                            <?PHP $index ++; ?>
                        <?PHP endforeach ?>
                    <?PHP endif ?>

                    <div class="row">
                        <?PHP if (!empty($benefits)): ?>
                            <?PHP foreach ($benefits as $benefit): ?>
                                <div class="col-sm-4">
                                    <div class="about-item">
                                        <div class="about-item__h font-1">
                                            <h3><?=__($benefit->post_title)?></h3>
                                        </div>
                                        <div class="about-item__desc">
                                            <p><?PHP echo apply_filters( 'the_content',$benefit->post_content ); ?></p>
                                        </div>
                                    </div>
                                </div>
                            <?PHP endforeach ?>
                        <?PHP endif ?>
                    </div>
                    <div class="row">
                        <div class="col-md-12">
                            <div class="about__h font-1">
                                <h2><?=__('Our Team','plaza')?></h2>
                            </div>
                        </div>
                    </div>
                    <div class="row special-align">
                        <div data-depth="0.70" class="about-bg-12 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/popular-small-bg-3.svg" alt=""/></div>
                        <div data-depth="0.70" class="about-bg-13 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-6.svg" alt=""/></div>
                        <div data-depth="0.70" class="about-bg-14 layer"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-3.svg" alt=""/></div>
                        <div data-depth="0.70" class="about-bg-15 layer">
                            <div class="img"><img src="<?=TDIR?>/assets/dist/s/images/useful/svg/theme/small-img-2.svg" alt=""/></div>
                        </div>
                        <?PHP if (!empty($members)): ?>
                            <?PHP foreach ($members as $member): ?>
                                <div class="col-sm-3">
                                    <div class="about-team">
                                        <div class="about-team__img">
                                            <?PHP if (has_post_thumbnail($member->ID)): ?>
                                                <img src="<?=get_the_post_thumbnail_url($member->ID,'large')?>" alt=""/>
                                            <?PHP endif ?>
                                        </div>
                                        <div class="about-team__h font-1">
                                            <h3><?=__($member->post_title)?></h3>
                                        </div>
                                        <div class="about-team__desc">
                                            <p><?=nl2br(__($member->post_excerpt))?></p>
                                        </div>
                                    </div>
                                </div>
                            <?PHP endforeach ?>
                        <?PHP endif ?>
                    </div>
                </div>
            </section>

        </main>
    <?PHP endwhile ?>
<?PHP endif ?>

<?PHP get_footer(); ?>

我得到的错误 注意：未定义变量：index in /home/r328061/koopia/wp-content/themes/plaza/about.PHP 第 51 行 注意：未定义变量：index in /home/r328061/koopia/wp-content/themes/plaza/about.PHP on line 62 风格=“浮动：右；” src="图片网址" alt=""/>

注意：未定义变量：第 77 行 /home/r328061/koopia/wp-content/themes/plaza/about.PHP 中的索引

解决方法

您需要为 $index 定义一个值。添加代码的顶部：

<?php
$index = "1";
?>

,

只需在 php 文件顶部定义 $index 变量：

<?php $index = 0; ?>