删除特色图像如果滑块存在于Single.php

Question

下面的代码是针对我的single.php的。php if（have_posts（））调用标准wordpress功能图像，函数_exists（'dfi_get_featured_images'）部分获取以nivo滑块样式包装的滑块图像。

php if（have_posts（））循环正在破坏脚本。我试图将其包含在if-else语句中，以仅在帖子if（$featuredImages！=NULL）中没有幻灯片图像时显示wordpress特色图像。

任何关于编码的帮助都会很好。

谢谢…李

<div id="featured" class="row-fluid"> 
<?php 
if ( function_exists('dfi_get_featured_images') ) {            
   $featuredImages = dfi_get_featured_images();             
if( !is_null($featuredImages) ){
 echo "<div class='slider-wrapper theme-default'>";
       echo "<div class='entry-thumbnail nivoSlider' style='width: 1170px;'>";
       foreach($featuredImages as $images) {
           echo "<a href='" . get_permalink() . "' title = '" .     dfi_get_image_alt_by_id($images['attachment_id']) . "'>";
           echo "<img src = '" . $images['thumb'] . "' />";
           echo "</a>";                                        
       }
       echo "</div>";
       echo "</div>";
   }
 } 
if($featuredImages!=NULL)
{

}
else
{
<?php if ( have_posts() ) { ?>
            <?php while ( have_posts() ) { ?>
                <?php the_post(); ?>
                <?php if ( '' != get_the_post_thumbnail() ) { ?>
                    <?php the_post_thumbnail( 'full' ); ?>
                <?php } // end if ?>
            <?php } // end while ?>
        <?php } // end have_posts ?>

  }

?>

Answer 1

<?php 
    if ( have_posts() ) { 
        while ( have_posts() ) {
            the_post();

            if ( function_exists('dfi_get_featured_images') ) { // If the featured images function exists         
                $featuredImages = dfi_get_featured_images();    // Get those featured slider images         
                if( !is_null($featuredImages) ) { //If there are featured slider images to get, then:

                    echo "<div class='slider-wrapper theme-default'>";
                    echo "<div class='entry-thumbnail nivoSlider' style='width: 1170px;'>";
                    foreach($featuredImages as $images) {
                        echo "<a href='" . get_permalink() . "' title = '" . dfi_get_image_alt_by_id($images['attachment_id']) . "'>";
                        echo "<img src = '" . $images['thumb'] . "' />";
                        echo "</a>";                                        
                    }
                    echo "</div>";
                    echo "</div>";

                } else {
                    the_post_thumbnail( 'full' );
                }
            } else if ( has_post_thumbnail() ) { //If there are no featured images to get, but there is a thumbnail
                the_post_thumbnail( 'full' );
            } // end else if
        } // end while
    } // end hav_posts          

?>  

需要注意的几点：

您不必在每一行的开头和结尾都不断地打开和关闭php。这使得代码变得杂乱无章，更难阅读。

想想你实际上想做什么。如果有一个滑块来代替，你不想删除功能图像——你想显示滑块而不是功能图像（至少，对我来说是这样）。下面是这段代码背后的思考过程：

if (has function check if dfi images is registered) {
    check and see if there are andy dfi images
    if there are dfi images {
        loop through them and display them
    } else if dfi images is registered but there are no dfi images {
        display the thumbnail
    }
} else, dfi images must not be registered {
    display the thumbnail
}

因此，您将首先检查插件，然后插件图像的存在，如果其中任何一个返回负片，您将显示缩略图图像。