如果当前代码管理所有块，使用图像替换使用wp_get_attachment_image_src 带硬编码输出img 标签，带echo wp_get_attachment_image() 将返回img 标记为字符串，默认alt为image，如果未设置则为空。
下面是您的代码更新后的想法描述。
<?php
class home_main_post_below_list extends AQ_Block {
//set and create block
function __construct() {
$block_options = array(
\'name\' => \'Home main post with below list post\',
\'size\' => \'span12\',
);
//create the block
parent::__construct(\'home_main_post_below_list\', $block_options);
}
//create form
function form($instance) {
$titles = isset($instance[\'titles\']) ? esc_attr($instance[\'titles\']) : \'Recent Posts\';
$number_show = isset($instance[\'number_show\']) ? absint($instance[\'number_show\']) : 5;
?>
<p><label for="<?php echo $this->get_field_id(\'titles\'); ?>"><?php _e(\'Title:\', \'tl_back\'); ?></label>
<input class="widefat" id="<?php echo $this->get_field_id(\'titles\'); ?>" name="<?php echo $this->get_field_name(\'titles\'); ?>" type="text" value="<?php echo $titles; ?>" /></p>
<p><label for="<?php echo $this->get_field_id(\'number_show\'); ?>"><?php _e(\'Number of posts to show:\', \'tl_back\'); ?></label>
<input id="<?php echo $this->get_field_id(\'number_show\'); ?>" name="<?php echo $this->get_field_name(\'number_show\'); ?>" type="text" value="<?php echo $number_show; ?>" size="3" /></p>
<label for="<?php echo $this->get_field_id(\'cats\'); ?>"><?php _e(\'Select categories to include in the recent posts list:\', \'tl_back\'); ?>
<?php
$categories = get_categories(\'hide_empty=0\');
echo "<br/>";
foreach ($categories as $cat) {
$option = \'<input type="checkbox" id="\' . $this->get_field_id(\'cats\') . \'[]" name="\' . $this->get_field_name(\'cats\') . \'[]"\';
if (isset($instance[\'cats\'])) {
foreach ($instance[\'cats\'] as $cats) {
if ($cats == $cat->term_id) {
$option = $option . \' checked="checked"\';
}
}
}
$option .= \' value="\' . $cat->term_id . \'" />\';
$option .= \' \';
$option .= $cat->cat_name;
$option .= \'<br />\';
echo $option;
}
?>
</label>
<?php
}
//create block
function block($instance) {
extract($instance);
$titles = apply_filters(\'widget_title\', empty($instance[\'titles\']) ? \'Recent Posts\' : $instance[\'titles\'], $instance, $this->id_base);
if (!isset($instance["cats"])) {
$cats = \'\';}
// array to call recent posts.
$themeloy_args = array(
\'showposts\' => $number_show,
\'category__in\' => $cats,
);
$themeloy_widget = null;
$themeloy_widget = new WP_Query($themeloy_args);
?>
<div class="widget post_list_medium_widget">
<?php if (!empty($instance[\'titles\'])) {?><h3 class="widget-title"><span><?php echo $instance["titles"];?></span></h3><?php }?>
<div class="widget_container">
<div class="post_list_medium">
<?php
$i = 0;
while ($themeloy_widget->have_posts()) {
$i++;
$themeloy_widget->the_post();
$post_id = get_the_ID();
$thumb = themeloy_get_thumbnail(get_the_ID());
if ($i == 1) {
?>
<div class="list_item">
<div class="entry-thumb feature-item">
<a href="<?php the_permalink(); ?>">
<?php if ( has_post_thumbnail()) {
echo wp_get_attachment_image( get_post_thumbnail_id( $post_id ), \'feature-large\', false, array(\'class\'=>\'cat-feature-large-img\') );
} else {echo \'<img class="cat-feature-large-img" src="\'.get_template_directory_uri().\'/images/demo/feature-large.jpg\'.\'" alt="">\';} ?>
</a>
<div class="cat-feature-large">
<?php $post_cat = get_post_custom_values(\'cat_themeloy_select\', get_the_ID());
$post_cat = ($post_cat[0] != \'\') ? $post_cat[0] : of_get_option(\'blog_category_post\');
if($post_cat == \'1\'){echo \'<p class="cat-slider">\'; echo the_category(\', \').\'</p>\';}?>
</div>
<?php echo themeloy_post_type(); ?>
</div>
<h2><a href="<?php the_permalink(); ?>" class="title"><?php the_title(); ?></a></h2>
<?php echo themeloy_post_meta(get_the_ID());?>
<p><?php echo themeloy_short_title(320, get_the_excerpt(\'\')); ?> </p>
</div>
<div class="clear margin-buttons"></div>
<?php }else{?>
<div class="small-list-content">
<?php
$post_date = get_post_custom_values(\'date_themeloy_select\', get_the_ID());
$post_date = ($post_date[0] != \'\') ? $post_date[0] : of_get_option(\'blog_date_post\');
if($post_date == \'1\'){
?>
<div class="feature_post_style">
<span class="post_date"><span class="date_number"><?php echo get_the_date(\'d\');?></span> <?php echo get_the_date(\'M\');?>
<i class="icon-caret-right feature-icon-right"></i>
</span>
<span class="post_time"><i class="icon-time"></i> <?php echo get_the_time(\'H:i\');?></span>
</div>
<?php }?>
<div class="feature-link feature-item">
<a href="<?php the_permalink(); ?>" class="feature-link">
<?php if ( has_post_thumbnail()) {
echo wp_get_attachment_image( get_post_thumbnail_id( $post_id ), \'medium-feature\', false );
}else{echo \'<img src="\'.get_template_directory_uri().\'/images/demo/medium-feature.jpg" alt="">\';} ?>
</a>
<?php echo themeloy_post_type(); ?>
</div>
<div class="list_desc">
<h4 class="list_title"><a class="post-title" href="<?php the_permalink(); ?>" rel="bookmark" title="<?php the_title_attribute(); ?>">
<?php the_title(); ?>
</a></h4>
<?php echo themeloy_post_meta(get_the_ID());?>
</div>
<div class="clear"></div>
</div>
<?php }}?>
</div>
</div>
</div>
<?php
wp_reset_query();
}
function update($new_instance, $old_instance) {
return $new_instance;
}
}
也可回退
img 如果未获得post\\u缩略图集，则标记
alt 属性为空，因为它是辅助功能指南所要求的。
