Question

PHP不是我的专业领域，而且我一直在撞墙直到2-3天，现在试图解决这个问题。

我需要运行自定义WordPress查询，在页面上显示一些帖子，为了做到这一点，我安装了PHP Everywhere插件将PHP转换为短代码。

我有这个循环（它可能也可以使用一些工作）并且它本身工作正常，但插件的工作方式我需要运行具有不同类别ID的此循环的多个实例，以显示来自不同类别的帖子在同一页上。

这是我现在拥有的循环：

<?php
    if ( get_query_var( "paged" ) ) { $paged = get_query_var( "paged" ); }
    elseif ( get_query_var( "page" ) ) { $paged = get_query_var( "page" ); }
    else { $paged = 1; }
    $the_query = new WP_Query("cat=20&posts_per_page=5&paged=" . $paged); 
?>

<?php if ( $the_query->have_posts() ) : ?>

<?php while ( $the_query->have_posts() ) : $the_query->the_post(); ?>

<div class="post_square">
    <a href="<?php the_permalink() ?>" class="post_image" style="background-image: url(<?php the_post_thumbnail_url(); ?>);"></a>
    <div class="post_text">
        <div class="post_title"><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></div>
        <div class="post_meta">By <?php $author = the_author_meta("display_name"); ?> / <?php echo get_the_date("F j, Y"); ?></div>
    </div>
</div>

<?php endwhile; ?>

<?php
    next_posts_link( "Older Entries", $the_query->max_num_pages = 3 );
    previous_posts_link( "Newer Entries" );
?>

<?php wp_reset_postdata(); ?>

<?php else:  ?>
<p><?php _e( "Sorry, no posts matched your criteria" ); ?></p>

<?php endif; ?>

该插件要求我按如下方式格式化PHP，以在同一页面上运行多个实例：

<?php
    if($instance=="1"){
        echo("Instance 1");
    }
    if($instance=="2"){
        echo("Instance 2");
    }
?>

我的问题是重写我原来的PHP代码以适应第二个循环的回声。

我已经厌倦了下面这段代码了，但是它无效：

<?php
    if ( $instance=="1" ) {
        if ( get_query_var( "paged" ) ) { $paged = get_query_var( "paged" ); }
        elseif ( get_query_var( "page" ) ) { $paged = get_query_var( "page" ); }
        else { $paged = 1; }
        $the_query = new WP_Query("cat=20&posts_per_page=5&paged=" . $paged);
        if ( $the_query->have_posts() ) :
        while ( $the_query->have_posts() ) : $the_query->the_post();
        echo '<div class="post_square">
                    <a href="'. the_permalink() .'" class="post_image" style="background-image: url('. the_post_thumbnail_url(); .');"></a>
                    <div class="post_text">
                        <div class="post_title"><a href="'. the_permalink() .'">'. the_title(); .'</a></div>
                        <div class="post_meta">By '. $author = the_author_meta("display_name"); .' / '. echo get_the_date("F j, Y"); .'</div>
                    </div>
                </div>';
        endwhile;
        next_posts_link( "Older Entries", $the_query->max_num_pages = 3 );
        previous_posts_link( "Newer Entries" );
        wp_reset_postdata();
        else:
            _e( "Sorry, no posts matched your criteria" );
        endif;
    }
    if ( $instance=="2" ) {
        echo 'this is two';
    }
?>

我在Dreamweaver中得到3个语法错误警告，但我不太清楚PHP知道哪个'。'它指的是：

我很茫然。我已经尝试了很多方法来做到这一点，但它超出了我的范围......

Answer 1

看起来你必须在第10,12,13行;后删除()个字符。固定代码为：

<?php
    if ( $instance=="1" ) {
        if ( get_query_var( "paged" ) ) { $paged = get_query_var( "paged" ); }
        elseif ( get_query_var( "page" ) ) { $paged = get_query_var( "page" ); }
        else { $paged = 1; }
        $the_query = new WP_Query("cat=20&posts_per_page=5&paged=" . $paged);
        if ( $the_query->have_posts() ) :
        while ( $the_query->have_posts() ) : $the_query->the_post();
        echo '<div class="post_square">
                    <a href="'. the_permalink() .'" class="post_image" style="background-image: url('. the_post_thumbnail_url() .');"></a>
                    <div class="post_text">
                        <div class="post_title"><a href="'. the_permalink() .'">'. the_title() .'</a></div>
                        <div class="post_meta">By '. $author = the_author_meta("display_name") .' / '. echo get_the_date("F j, Y") .'</div>
                    </div>
                </div>';
        endwhile;
        next_posts_link( "Older Entries", $the_query->max_num_pages = 3 );
        previous_posts_link( "Newer Entries" );
        wp_reset_postdata();
        else:
            _e( "Sorry, no posts matched your criteria" );
        endif;
    }
    if ( $instance=="2" ) {
        echo 'this is two';
    }
?>

更新

不要在回声中使用WordPress的回声功能。您可以详细了解the_permalink和get_the_permalink here之间的差异。所以更好，工作代码是：

<?php
    if ( $instance=="1" ) {
        if ( get_query_var( "paged" ) ) { $paged = get_query_var( "paged" ); }
        elseif ( get_query_var( "page" ) ) { $paged = get_query_var( "page" ); }
        else { $paged = 1; }
        $the_query = new WP_Query("cat=20&posts_per_page=5&paged=" . $paged);
        if ( $the_query->have_posts() ) :
        while ( $the_query->have_posts() ) : $the_query->the_post();
        echo '<div class="post_square">
                    <a href="'. get_the_permalink() .'" class="post_image" style="background-image: url('. get_the_post_thumbnail_url() .');"></a>
                    <div class="post_text">
                        <div class="post_title"><a href="'. get_the_permalink() .'">'. the_title() .'</a></div>
                        <div class="post_meta">By '. $author = get_the_author_meta("display_name") .' / '. get_the_date("F j, Y") .'</div>
                    </div>
                </div>';
        endwhile;
        next_posts_link( "Older Entries", $the_query->max_num_pages = 3 );
        previous_posts_link( "Newer Entries" );
        wp_reset_postdata();
        else:
            _e( "Sorry, no posts matched your criteria" );
        endif;
    }
    if ( $instance=="2" ) {
        echo 'this is two';
    }
?>

Answer 2

这是你想要的：

 echo '<div class="post_square">
                    <a href="'. the_permalink() .'" class="post_image" style="background-image: url('. the_post_thumbnail_url() .');"></a>
                    <div class="post_text">
                        <div class="post_title"><a href="'. the_permalink() .'">'. the_title() .'</a></div>
                        <div class="post_meta">By '. $author = the_author_meta("display_name") .' / '. get_the_date("F j, Y") .'</div>
                    </div>
                </div>';

如何在PHP echo

2 个答案:

更新