WordPress按字母顺序排序循环问题

时间：2016-12-26 作者：Trenton Moore

我最近和以前都为我的公司创建了一个网站，我只是简单地手动更改一个变量，并将相同的代码一个接一个地复制和粘贴了26次，但我想我应该循环使用它，使其更易于调试或更改。

下面是循环代码。

<div class="col_half">
<div class="alphabet-sort">
    <ul class="alphabet-list" style="padding:0px;margin-left:0px;">
        <li class="alphabet-sort-item first"><a href="#letter-A">A</a></li>
        <li class="alphabet-sort-item"><a href="#letter-B">B</a></li>
        <li class="alphabet-sort-item"><a href="#letter-C">C</a></li>
        <li class="alphabet-sort-item"><a href="#letter-D">D</a></li>
        <li class="alphabet-sort-item"><a href="#letter-E">E</a></li>
        <li class="alphabet-sort-item"><a href="#letter-F">F</a></li>
        <li class="alphabet-sort-item"><a href="#letter-G">G</a></li>
        <li class="alphabet-sort-item"><a href="#letter-H">H</a></li>
        <li class="alphabet-sort-item"><a href="#letter-I">I</a></li>
        <li class="alphabet-sort-item last"><a href="#letter-J">J</a></li>
      </ul>
</div>
<style>
span.category-inactive-member {
  display:none !important;
}
.listed-member {
  line-height:1;
}
</style>
<?php
    //get all post IDs for posts beginning with cap B, in title order,
        //display posts
$categories = get_the_category();
$alpha_char = 1;

while ($alpha_char <= 10) {
  if ($alpha_char == 1) {
  $first_char = \'A\';
}
else if ($alpha_char == 2) {
  $first_char = \'B\';
}
else if ($alpha_char == 3) {
  $first_char = \'C\';
}
else if ($alpha_char == 4) {
  $first_char = \'D\';
}
else if ($alpha_char == 5) {
  $first_char = \'E\';
}
else if ($alpha_char == 6) {
  $first_char = \'F\';
}
else if ($alpha_char == 7) {
  $first_char = \'G\';
}
else if ($alpha_char == 8) {
  $first_char = \'H\';
}
else if ($alpha_char == 9) {
  $first_char = \'I\';
}
else if ($alpha_char == 10) {
  $first_char = \'J\';
}
  echo $first_char;
  echo $alpha_char;
        echo \'<table class="alphabet" style="border:0px;border-color:transparent;">
                    <tbody><tr>
                        <td style="border-color:transparent;padding-left:5px;padding-right:5px;"><span id="letter-\' . $first_char . \'"><strong>\' . $first_char . \'</strong></span></td>
                        <td width="100%" style="border-color:transparent;"><span class="separator-line"></span></td>
                    </tr>
                </tbody></table>\';
        $postids=$wpdb->get_col($wpdb->prepare("
        SELECT      ID
        FROM        $wpdb->posts
        WHERE       SUBSTR($wpdb->posts.post_title,1,1) = %s
        ORDER BY    $wpdb->posts.post_title",$first_char)); 

        if ($postids) {
        $args=array(
          \'post__in\' => $postids,
          \'post_type\' => \'page\',
          \'post_status\' => \'publish\',
          \'posts_per_page\' => -1,
          \'caller_get_posts\'=> 1.,
          \'orderby\' => \'title\',
          \'order\' => \'ASC\',
        );
        $my_query = null;
        $my_query = new WP_Query($args);
        if( $my_query->have_posts()) {
            while ($my_query->have_posts()) : $my_query->the_post();
            $current_meta_value = get_post_meta(get_the_ID(), \'featured-checkbox\', true);
            $inactive_meta_value = get_post_meta(get_the_ID(), \'inactive-member\', true);
            $backup_phone_meta_value = get_post_meta(get_the_ID(), \'backup-answering\', true);
            $backup_phone_meta_value = get_post_meta(get_the_ID(), \'backup-answering\', true);
            if ( $inactive_meta_value != \'yes\' ) { ?>
            <p class="listed-member notmem<?php echo $current_meta_value; ?>"><span <?php post_class(); ?>><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php the_title_attribute(); ?>"><?php the_title(); ?><?php $member_meta_value = get_post_meta(get_the_ID(), \'member-checkbox\', true); $phone_meta_value = get_post_meta(get_the_ID(), \'phone-checkbox\', true); $subtitle_meta = get_post_meta(get_the_ID(), \'subtitle\', true); ?><?php if( $subtitle_meta != \'\' ) {echo \' (\' . $subtitle_meta . \')\';};?></a><img src="/wp-content/uploads/2016/09/member_icon.png" class="member-icon-small<?php echo $member_meta_value ?>"/><?php if($backup_phone_meta_value == \'no\') { echo \'<img src="/wp-content/themes/odextranet/images/icons/phone_icon.png" class="phone-icon-small\' . $phone_meta_value . \'" />\';}else if($backup_phone_meta_value == \'yes\') {echo \'<img src="/wp-content/themes/odextranet/images/icons/phone_icon.png" class="phone-icon-small\' . $backup_phone_meta_value . \'" />\';}?></span></span>
            </p>
            <?php }
          endwhile;
        }
        $alpha_char = $alpha_char + 1;
        echo $alpha_char;
        wp_reset_query();  // Restore global post data stomped by the_post().
        }
      }
    ?>
</div>
<div class="col_half col_last">
<div class="alphabet-sort">
      <ul class="alphabet-list" style="padding:0px;margin-left:0px;">
        <li class="alphabet-sort-item first"><a href="#letter-K">K</a></li>
        <li class="alphabet-sort-item"><a href="#letter-L">L</a></li>
        <li class="alphabet-sort-item"><a href="#letter-M">M</a></li>
        <li class="alphabet-sort-item"><a href="#letter-N">N</a></li>
        <li class="alphabet-sort-item"><a href="#letter-O">O</a></li>
        <li class="alphabet-sort-item"><a href="#letter-P">P</a></li>
        <li class="alphabet-sort-item"><a href="#letter-Q">Q</a></li>
        <li class="alphabet-sort-item"><a href="#letter-R">R</a></li>
        <li class="alphabet-sort-item"><a href="#letter-S">S</a></li>
        <li class="alphabet-sort-item"><a href="#letter-T">T</a></li>
        <li class="alphabet-sort-item"><a href="#letter-U">U</a></li>
        <li class="alphabet-sort-item"><a href="#letter-V">V</a></li>
        <li class="alphabet-sort-item"><a href="#letter-W">W</a></li>
        <li class="alphabet-sort-item"><a href="#letter-X">X</a></li>
        <li class="alphabet-sort-item"><a href="#letter-Y">Y</a></li>
        <li class="alphabet-sort-item last"><a href="#letter-Z">Z</a></li>
      </ul>
</div>
<?php
    $alpha_char = 1;

while ($alpha_char <= 10) {
  if ($alpha_char == 1) {
  $first_char = \'K\';
}
else if ($alpha_char == 2) {
  $first_char = \'L\';
}
else if ($alpha_char == 3) {
  $first_char = \'M\';
}
else if ($alpha_char == 4) {
  $first_char = \'N\';
}
else if ($alpha_char == 5) {
  $first_char = \'O\';
}
else if ($alpha_char == 6) {
  $first_char = \'P\';
}
else if ($alpha_char == 7) {
  $first_char = \'Q\';
}
else if ($alpha_char == 8) {
  $first_char = \'R\';
}
else if ($alpha_char == 9) {
  $first_char = \'S\';
}
else if ($alpha_char == 10) {
  $first_char = \'T\';
}
else if ($alpha_char == 11) {
  $first_char = \'U\';
}
else if ($alpha_char == 12) {
  $first_char = \'V\';
}
else if ($alpha_char == 13) {
  $first_char = \'W\';
}
else if ($alpha_char == 14) {
  $first_char = \'X\';
}
else if ($alpha_char == 15) {
  $first_char = \'Y\';
}
else if ($alpha_char == 16) {
  $first_char = \'Z\';
}
  echo $first_char;
  echo $alpha_char;
        echo \'<table class="alphabet" style="border:0px;border-color:transparent;">
                    <tbody><tr>
                        <td style="border-color:transparent;padding-left:5px;padding-right:5px;"><span id="letter-\' . $first_char . \'"><strong>\' . $first_char . \'</strong></span></td>
                        <td width="100%" style="border-color:transparent;"><span class="separator-line"></span></td>
                    </tr>
                </tbody></table>\';
        $postids=$wpdb->get_col($wpdb->prepare("
        SELECT      ID
        FROM        $wpdb->posts
        WHERE       SUBSTR($wpdb->posts.post_title,1,1) = %s
        ORDER BY    $wpdb->posts.post_title",$first_char)); 

        if ($postids) {
        $args=array(
          \'post__in\' => $postids,
          \'post_type\' => \'page\',
          \'post_status\' => \'publish\',
          \'posts_per_page\' => -1,
          \'caller_get_posts\'=> 1.,
          \'orderby\' => \'title\',
          \'order\' => \'ASC\',
        );
        $my_query = null;
        $my_query = new WP_Query($args);
        if( $my_query->have_posts()) {
            while ($my_query->have_posts()) : $my_query->the_post();
            $current_meta_value = get_post_meta(get_the_ID(), \'featured-checkbox\', true);
            $inactive_meta_value = get_post_meta(get_the_ID(), \'inactive-member\', true);
            $backup_phone_meta_value = get_post_meta(get_the_ID(), \'backup-answering\', true);
            $backup_phone_meta_value = get_post_meta(get_the_ID(), \'backup-answering\', true);
            if ( $inactive_meta_value != \'yes\' ) { ?>
            <p class="listed-member notmem<?php echo $current_meta_value; ?>"><span <?php post_class(); ?>><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php the_title_attribute(); ?>"><?php the_title(); ?><?php $member_meta_value = get_post_meta(get_the_ID(), \'member-checkbox\', true); $phone_meta_value = get_post_meta(get_the_ID(), \'phone-checkbox\', true); $subtitle_meta = get_post_meta(get_the_ID(), \'subtitle\', true); ?><?php if( $subtitle_meta != \'\' ) {echo \' (\' . $subtitle_meta . \')\';};?></a><img src="/wp-content/uploads/2016/09/member_icon.png" class="member-icon-small<?php echo $member_meta_value ?>"/><?php if($backup_phone_meta_value == \'no\') { echo \'<img src="/wp-content/themes/odextranet/images/icons/phone_icon.png" class="phone-icon-small\' . $phone_meta_value . \'" />\';}else if($backup_phone_meta_value == \'yes\') {echo \'<img src="/wp-content/themes/odextranet/images/icons/phone_icon.png" class="phone-icon-small\' . $backup_phone_meta_value . \'" />\';}?></span></span>
            </p>
            <?php }
          endwhile;
        }
        $alpha_char = $alpha_char + 1;
        echo $alpha_char;
        wp_reset_query();  // Restore global post data stomped by the_post().
        }
      }
    ?>
</div>
基本上我有两个变量：$alpha\\u char和$first\\u char。循环找到$alpha\\u char的数值，然后if语句将其更改为字母。我知道这有点不合常规，但很管用。除了一个问题。由于某种原因，当它到达x、y和z时，它会无限循环。I\'v甚至尝试将它们从循环中分离出来，看看它是否有某种限制，但它没有。出于某种原因，如果将X、Y或Z设置为$first\\u char，则会出现问题。我把它们全部替换为字母N，没有任何问题，所以看起来只是这些字母的问题。

1 个回复
SO网友:Milo

我会以不同的方式来处理这个问题。您正在输出所有页面，所以我只需一次完成所有页面。然后，您可以迭代每个字母，运行循环，并将当前字母与页面标题进行比较，看看是否匹配。

$args = array(
    \'post_type\' => \'page\',
    \'posts_per_page\' => -1,
    \'orderby\' => \'title\',
    \'order\' => \'ASC\'
);
$all_pages = new WP_Query( $args );

$columns = array(
    range( \'A\', \'J\' ),
    range( \'K\', \'Z\' )
);

foreach( $columns as $letters ){

    foreach( $letters as $letter ){

        echo $letter;

        while( $all_pages->have_posts() ){
            $all_pages->the_post();
            $title = get_the_title();
            if( $letter == strtoupper( $title[0] ) ){
                echo $title;
            }
        }
        $all_pages->rewind_posts();
    }

}

wp_reset_postdata();

标签： loop   variables   小码农  

相关推荐

WordPress Custom Post Loop

我正在尝试循环浏览自定义WordPress帖子，遇到了一个问题，比如我添加了自定义字段并想在中显示它<li> 使用循环。我成功地完成了操作，但数据/链接/类别正在重复，如果类别与以下内容相同，我希望只显示一次：如果我有2篇带有data1类别的帖子，那么链接将只显示data1once 但我有2个不同类别的帖子，然后它会分别显示每个帖子。Sample Code:<ul class="filter filter-top"> <li cla