我有2种自定义帖子类型（使用CPT UI和ACF创建）“；“全球”；和；“个人”；。其目的是让用户参考；“全球”；通过将该全球帖子的图像（链接）显示在；“个人”；他们正在创建的帖子。
循环工作，当它到达包含图像信息的字段时，将显示图像。但是，代码继续运行并显示错误，如；foreach（）无效；等等。我基本上需要一个；“如果”；语句maybe或指示循环在找到要查找的信息时停止的内容。或任何其他建议，将不胜感激！
示例-“全球”帖子可能完全不同”；比萨饼基地；然后，用户想要创建自己的比萨饼，因此他们从显示在ACF关系字段中的“global”中选择某个比萨饼基地。
他们通过创建一个“个人”帖子来实现这一点，在这里他们可以将所有浇头添加到所选的基础上（通过其他acf字段），然后一旦创建，它就成为他们的“个人”比萨饼，存储为“个人”帖子类型。
希望这是有意义的！
代码如下
function show_global_pics_in_personal_library(){
$variablename = get_field(\'dcfg_global_item_select\'); ?>
<div class="container">
<?php foreach($variablename as $variablename2) : ?>
<a href="<?php echo get_page_link($variablename2 ->ID); ?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\'); ?>">
</center>
</a>
<?php endforeach; ?>
<?php $variablename = get_field(\'dchdl_global_item_select\'); ?>
<?php foreach($variablename as $variablename2) : ?>
<a href="<?php echo get_page_link($variablename2 ->ID); ?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\'); ?>">
</center>
</a>
<?php endforeach; ?>
<?php $variablename = get_field(\'dcstd_global_item_select\'); ?>
<?php foreach($variablename as $variablename2) : ?>
<a href="<?php echo get_page_link($variablename2 ->ID); ?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\'); ?>">
</center>
</a>
<?php endforeach; ?>
<?php $variablename = get_field(\'dcthdl_global_item_select\'); ?>
<?php foreach($variablename as $variablename2) : ?>
<a href="<?php echo get_page_link($variablename2 ->ID); ?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\'); ?>">
</center>
</a>
<?php endforeach; ?>
<?php $variablename = get_field(\'drcfg_global_item_select\'); ?>
<?php foreach($variablename as $variablename2) : ?>
<a href="<?php echo get_page_link($variablename2 ->ID); ?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\'); ?>">
</center>
</a>
<?php endforeach; ?>
<?php $variablename = get_field(\'drchdl_global_item_select\'); ?>
<?php foreach($variablename as $variablename2) : ?>
<a href="<?php echo get_page_link($variablename2 ->ID); ?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\'); ?>">
</center>
</a>
<?php endforeach; ?>
<?php $variablename = get_field(\'drcstd_global_item_select\'); ?>
<?php foreach($variablename as $variablename2) : ?>
<a href="<?php echo get_page_link($variablename2 ->ID); ?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\'); ?>">
</center>
</a>
<?php endforeach; ?>
</div>
<?php
}
add_shortcode(\'show_global_pics_in_personal\', \'show_global_pics_in_personal_library\');
最合适的回答,由SO网友:DCEXC 整理而成
对于那些正在寻找答案的人，经过反复试验，我发现；“如果”；我一直在寻找的声明。完整代码如下：
$variablename = get_field(\'dcfg_global_item_select\');
if ( !empty( $variablename ) ) {?>
<div class="container">
<?php foreach($variablename as $variablename2):?>
<a href="<?php echo get_page_link($variablename2 ->ID);?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\');?>">
</center>
</a>
<?php endforeach;
}?>
<?php $variablename = get_field(\'dchdl_global_item_select\');
if ( !empty( $variablename ) ) {?>
<div class="container">
<?php foreach($variablename as $variablename2):?>
<a href="<?php echo get_page_link($variablename2 ->ID);?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\');?>">
</center>
</a>
<?php endforeach;
}?>
<?php $variablename = get_field(\'dcstd_global_item_select\');
if ( !empty( $variablename ) ) {?>
<div class="container">
<?php foreach($variablename as $variablename2):?>
<a href="<?php echo get_page_link($variablename2 ->ID);?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\');?>">
</center>
</a>
<?php endforeach;
}?>
<?php $variablename = get_field(\'dcthdl_global_item_select\');
if ( !empty( $variablename ) ) {?>
<div class="container">
<?php foreach($variablename as $variablename2):?>
<a href="<?php echo get_page_link($variablename2 ->ID);?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\');?>">
</center>
</a>
<?php endforeach;
}?>
<?php $variablename = get_field(\'drcfg_global_item_select\');
if ( !empty( $variablename ) ) {?>
<div class="container">
<?php foreach($variablename as $variablename2):?>
<a href="<?php echo get_page_link($variablename2 ->ID);?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\');?>">
</center>
</a>
<?php endforeach;
}?>
<?php $variablename = get_field(\'drchdl_global_item_select\');
if ( !empty( $variablename ) ) {?>
<div class="container">
<?php foreach($variablename as $variablename2):?>
<a href="<?php echo get_page_link($variablename2 ->ID);?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\');?>">
</center>
</a>
<?php endforeach;
}?>
<?php $variablename = get_field(\'drcstd_global_item_select\');
if ( !empty( $variablename ) ) {?>
<div class="container">
<?php foreach($variablename as $variablename2):?>
<a href="<?php echo get_page_link($variablename2 ->ID);?>">
<center>
<img src="<?php echo get_the_post_thumbnail_url($variablename2->ID, \'medium\');?>">
</center>
</a>
<?php endforeach;
}?>
</div>
<?php }?>
<?php add_shortcode(\'show_global_pics_in_personal\', \'show_global_pics_in_personal_library\');
